【预订】Open Letters and Letters Reprinted from Various 美国库房发货，通常付款后3-5周到货！
¥147.00
【预订】Open Wide 9781936840809 美国库房发货，通常付款后3-5周到货！
¥266.00
open经典:少年盟约【正版】 【正版图书，满额减，电子发票】
¥64.00定价：¥208.00 (3.08折)
【预订】Open Source Software for Statistical Analysis of Big Dat 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781799827696 Author 作者 Richard S. Segall Format 版本 平装-胶订 Pages Number 页数 250页 Publisher 出版社 Engineering Science Reference Publication Date 出版日期 2020-02-21 Language 语种 英语 Book Contents 内容简介 With the development of computing technologies in today’s modernized world, software packages have become easily accessible. Open source software, specifically, is a popular method for solving certain issues in the field of computer science. One key challenge is analyzing big data due to the high amounts that organizations are processing. Researchers and professionals need research on the foundations of open source software programs and how they can successfully analyze statistical data. Open Source Software for Statistical Analysis of Big Data: Emerging Research and Opportunities provides emerging research exploring the theoretical and practical aspe
¥2216
【预订】Open Source Software: Comparing Productivity 美国库房发货，通常付款后3-5周到货！
¥335.00
【预订】Open Source Software: Implementation and Management 美国库房发货，通常付款后3-5周到货！
¥657.00
【预订】Open and Flexible Learning in Vocational Education and T 美国库房发货，通常付款后3-5周到货！
¥482.00
【预订】Open Quantum Systems II 9783540309925 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783540309925 Author 作者 Attal Format 版本 平装-胶订 Pages Number 页数 244页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2006-06-07 Language 语种 英语 Book Contents 内容简介 This volume is the second in a series of three volumes dedicated to the lecture notes of the summer school “Open Quantum Systems” which took place in the Institut Fourier in Grenoble, from June 16th to July 4th 2003. The contributions presented in thesevolumesarerevisedandexpandedversionsofthenotesprovidedtothestudents during the school. After the rst volume, developing the Hamiltonian approach of open quantum systems, this second volume is dedicated to the Markovian approach. The third volume presents both approaches, but at the recent research level. Open quantum systems A quantum open system is a quantum system which is interacting with another one. This is a ge
¥608.00
【预订】Open Elite: England 1540-1880 美国库房发货，通常付款后3-5周到货！
¥644.00
【预订】Open Problems in the Geometry and Analysis of Banach Spa 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783319815510 Format 版本 平装-胶订 Publisher 出版社 Springer Publication Date 出版日期 2018-08-23 Language 语种 英语
¥1094
【预订】OPEN INTER-FIRM NETWORK FOR OPEN INNOVATION BY INCENTIVE 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9789813207776 Author 作者 MONDEN YASUHIRO Format 版本 精装 Pages Number 页数 270页 Publisher 出版社 World Scientific Publishing Publication Date 出版日期 2017-09-28 Language 语种 英语 Book Contents 内容简介 In the current environment of severe global competition, an uncertain business future as well as shorter product life cycles, companies have a pressing need to develop new products and businesses rapidly. In this book, Professor Yasuhiro Monden expounds on his theories about inter-firm networks and incentive price systems as important mechanisms to encourage innovation.The author has coined the term incentive price system to explain profit allocation systems which will motivate inter-firm collaboration to develop new customer-pleasing products or businesses. He notes that such a comprehensive concept of incentive price has not been studied in conventional economics
¥2122
【预订】Open Adoption Book: A Guide To Making Adoption Work 美国库房发货，通常付款后3-5周到货！
¥203.00
【预订】Open Sources 美国库房发货，通常付款后3-5周到货！
¥264.00
【预订】Open Multithreaded Transactions: A Transaction Model 美国库房发货，通常付款后3-5周到货！
¥1217
【预订】Open Quantum Systems in Biology, Cognitive and Social Sc 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783031290237 Author 作者 Linnaeus University Format 版本 精装 Pages Number 页数 372页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2023-06-02 Language 语种 其它（含多语） Book Contents 内容简介 This book mathematically analyzes the basic problems of biology, decision making and psychology within the framework of the theory of open quantum systems. In recent years there has been an explosion of interest in applications of quantum theory in fields beyond physics. The main areas include psychology, decision-making, economics, finance, social science as well as genetics and molecular biology. The corresponding models are referred to as quantum-like; they don’t concern any genuine physical processes in the human brain. Quantum-like models reflect the special features of information processing in biological, cognitive, and social systems whi
¥1825
Product Details 基本信息 ISBN-13 书号 9780262046114 Author 作者 Stadler Pages Number 页数 296页 Publisher 出版社 The MIT Press Publication Date 出版日期 20211012 Product Dimensions 商品尺寸 9.10 x 6.20 x 1.20
¥184.00
【预订】Open Your Mind: Your World and Your Future 9781509877003 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781509877003 Author 作者 Cairney Format 版本 平装-胶订 Pages Number 页数 160页 Publisher 出版社 MacMillan Children’s Books Publication Date 出版日期 1800-01-01 Product Dimensions 商品尺寸 8.9 x 6.6 x 0.5 cm Shipping Weight 商品重量 880g Language 语种 英语
¥83.00
【预售 按需印刷】Open Source Software for Libraries
¥1059.95
Open Inventor 程序设计从入门到精通 【速开发票，此书为单本而非一套，支持7天无理由退换】
本书从编写Open Inventor程序的基础知识和基本概念出发，讲解了在不同操作系统环境下的安装和设置以开始c)pen Inventor程序设计；接着介绍了Open Inventor的基本内容，包括场景管理、形体绘制和变换、颜色和光照、曲线和曲面、读写三维图形数据等；然后深入探讨了Open Inventor中的一些高级编程方法，包括场景遍历、事件和选择、传感器和引擎、工具箱和组件库以及拖拽器和操纵器等。 本书示例丰富、实用，语言通俗易懂，介绍全面，广泛适用于大学生、研究生、科研院所，以及从事OpenGL、DirectX、Java程序开发的人员，也非常适合作为Open Inventol程序开发的培训教程。
¥80.08定价：¥161.16 (4.97折)
OPEN-UP科普人文立体书:我的幼小衔接立体书 (盒装)(精装彩绘版)汪凌旭安徽科学技术出版社978753378974
涵盖小学低年级语文、数学、英语、科学四大学科基本知识点。 7个孩子熟悉的场景：家里、大街上、果园、学校、游乐城、超市和趣味密室，帮助孩子沉浸式学习与记忆。 超过58个互动机关，全面调动孩子的触觉和视觉。 精美的画面，丰富鲜艳的色彩，提高孩子的艺术鉴赏力。 大开本纸板书，圆角设计，坚硬耐磨，保护孩子的眼睛和小手。
¥63.70定价：¥98.00 (6.5折)
open·世界工匠精神书系厄特克尔家族:德国食品王朝的生意奥秘[德]鲁迪格·杨布鲁特贵州人民出版社97872211498
百分之九十八的德国人对奥特克这个名字都不陌生。这个名字比德国的历届**的名字都要家喻户晓。作者在本书中描述的不仅是一个向全德国提供大家日常生活需求的布丁和点心发酵的企业运行与它的精神，而且还谈到了许多这个家族至今为止不为人所知的另一面。
¥14.62定价：¥46.00 (3.18折)
Open Stack设计与实现 英特尔开源技术中心 编 电子工业出版社 9787121258305【正版】 【速开发票，优质售后，支持7天无理由退换】
这将是一本详细介绍Openstack设计与实现的书，同时它也将为读者展现Openstack社区如何工作，以及如何参与。因此，希望或正在参与Openstack开发的读者可以通过阅读本书更好地理解Openstack的设计原理以及部分实现细节，会将其放在整个CloudOS的体系结构里，安排一定篇幅介绍它所赖以生存的虚拟化技术，以及它们之间的交互。这将有利于读者形成对Openstack更为全局的认识，从而在研究以及在开发过程中遇到相关问题时，能够更为容易的寻找到解决的方法。
¥19.00定价：¥112.00 (1.7折)
【预订】Open Education: from OERs to MOOCs 9783662529232 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783662529232 Author 作者 Mohamed Jemni The Arab League Educational Cultural and Scie Format 版本 精装 Pages Number 页数 359页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2016-08-12 Shipping Weight 商品重量 719g Language 语种 英语 Book Contents 内容简介 This book focuses on the emerging phenomenon of Massive Open Online Courses (MOOCs), which are changing the fundamental underpinning of educational systems worldwide and forcing educators and other stakeholders to re-think the way instruction is currently conducted. It examines the origins of MOOCs within the context of the open education movement, and reviews current policies, guidelines and initiatives to promote the use of ICT in education through the development and use of open educational resources from international practices, including implementation and licensing issues. W
¥1582
Open Stack设计与实现【正版】 【正版图书，电子发票】
推荐购买：《云计算通俗讲义》人人都能懂的云计算书《LBS核心技术揭秘》（O2O本质技术揭秘！移动智能时代APP头筹技术！）云计算时代OpenStack必选经典：轻松实现从初识到达人进程！深入云计算与虚拟化OpenStack底层设计与实现原理：轻松形成OpenStack拓扑图！全面分析Nova；Swift、Cinder及Glance；Neutron；Keystone及可信计算池；Ceilometer等OpenStack相关组件项目！英特尔开源技术中心合力打造精品!
¥20.00定价：¥120.00 (1.67折)
【预订】Open Information Management 9781605662466 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781605662466 Author 作者 Samuli Niiranen Format 版本 精装 Pages Number 页数 498页 Publisher 出版社 Information Science Publishing Publication Date 出版日期 2009-05-31 Language 语种 英语 Book Contents 内容简介 Contemporary digital tools have revolutionized the storing, transfer, and processing of information management.Open Information Management: Applications of Interconnectivity and Collaboration provides a practical-level reference discussing the impact of emerging trends in information technology towards solutions capable of managing information within open, principally unbounded, operational environments. This book can be utilized in advanced courses in knowledge management, information technology, and business education, and also serve as an excellent addition to library reference sections and research collections.
¥1411
【预订】Open at the Close 9781496839312 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781496839312 Author 作者 Cecilia Konchar Farr Format 版本 精装 Pages Number 页数 277页 Publisher 出版社 University Press of Mississippi Publication Date 出版日期 2022-06-30 Language 语种 其它（含多语） Book Contents 内容简介 The first collection of essays focused exclusively on examining the Harry Potter novels as literature
¥1001
【预订】Open Source Geospatial Tools: Applications in Earth Obse 美国库房发货，通常付款后3-5周到货！
¥1217
【预订】Open Research Problems in Network Security 9783642192272 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783642192272 Author 作者 Camenisch Format 版本 平装-胶订 Pages Number 页数 171页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2011-02-17 Shipping Weight 商品重量 284g Language 语种 英语 Book Contents 内容简介 This book constitutes the refereed post-conference proceedings of the IFIP WG 11.4 International Workshop, iNetSec 2010, held in Sofia, Bulgaria, in March 2010. The 14 revised full papers presented together with an invited talk were carefully reviewed and selected during two rounds of refereeing. The papers are organized in topical sections on scheduling, adversaries, protecting resources, secure processes, and security for clouds.
¥608.00
【预订】Open Algebraic Surfaces 9780821805046 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9780821805046 Author 作者 Masayoshi Miyanishi Format 版本 精装 Pages Number 页数 259页 Publisher 出版社 American Mathematical Society (AMS) Publication Date 出版日期 2000-11-21 Language 语种 英语 Book Contents 内容简介 Open algebraic surfaces are a synonym for algebraic surfaces that are not necessarily complete. An open algebraic surface is understood as a Zariski open set of a projective algebraic surface. There is a long history of research on projective algebraic surfaces, and there exists a beautiful Enriques-Kodaira classification of such surfaces. The research accumulated by Ramanujan, Abhyankar, Moh, and Nagata and others has established a classification theory of open algebraic surfaces comparable to the Enriques-Kodaira theory. This research provides powerful methods to study the geometry and topology of open algebraic surfaces. The theory of open
¥1298
【预订】Open Source Data Warehousing and Business Intelligence 9 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781439816400 Author 作者 Lakshman Bulusu Format 版本 精装 Pages Number 页数 432页 Publication Date 出版日期 2012-08-06 Shipping Weight 商品重量 771g Language 语种 英语 Book Contents 内容简介 Examining implementation in terms of the systems development life cycle, this book highlights the practical aspects of implementing and using open-source data warehousing and business intelligence technologies. The text explains the key differences between open source, vendor data warehousing, and business intelligence technologies and provides end-to-end solutions that are scalable, high performance, and stable. It covers data warehouse design, real-time processing, data integration, presentation services, and real-time reporting. Emphasizing how they can be used in real-world applications, the author also presents best practices that can save time, effort, cost, and resources.
¥1958
【预订】Open Problems in Strongly Correlated Electron Systems 97 美国库房发货，通常付款后3-5周到货！
¥1217
【预订】OPEN SPACE 9789881683434 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9789881683434 Author 作者 SendPoints(Manufactured by) Format 版本 精装 Pages Number 页数 352页 Publisher 出版社 sendpoints Publication Date 出版日期 2012-11-25 Product Dimensions 商品尺寸 12.1 x 9.5 x 1.5 cm Shipping Weight 商品重量 5050g Language 语种 英语 Book Contents 内容简介 As the symbol and soul of a city, public landscape adds charm to a city, and public landscape design has thus become increasingly important in urban development process. Focusing mainly on the public landscape in the urban area, the book presents 56 of the world’s most distinctive urban landscape projects with high quality pictures and design plans that stimulate readers’ visual senses and detailed de*ions that provide an overall realization of the landscape design works.
¥377.00
OPEN SOURCES革命之声 Chris DiBona；Sam Ockman；Mark Stone 97873020 【速开发票，优质售后，支持7天无理由退换】
世界各地成千上万的程序员提供了可免费使用的源代码：这就是被称为Open Source的软件革命的精神。如今，Open Source的领袖们第一次聚集到一起，讨论他们所开创的这个软件产业的未来前景。本书中的这些短文透析了Open Source的工作方式、其成功的原因，以及Open Source将去向何方。对于致力于Open Source项目的那些程序员来说，Open Source是一种新的信仰；这项运动的精神领袖们为这些程序员描绘了一幅美好的前景。对于将Open Source软件集成到企业运作中的那些公司来说，Open Source揭示了开放式开发如何能够构建出更好的软件，并揭示出企业如何利用这些免费的软件来取得商业竞争上的优势。对于今天的程序员来说，下面这些计算机高手是他们的偶像，这些人开发出了很多软件，包括：世界上最流行和Web服务器软件——Apache；除Redmond之外增长最快的操作系统——Linux；世界上
¥37.70定价：¥77.60 (4.86折)
【预订】Open Source Archaeology 9783110440164 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783110440164 Format 版本 精装 Pages Number 页数 160页 Publisher 出版社 De Gruyter Open Poland Publication Date 出版日期 2015-11-27 Product Dimensions 商品尺寸 24,0 x 17,0 Language 语种 其它（含多语） Book Contents 内容简介 Open Source Archaeology: Ethics and Practice’ brings together authors and researchers in the field of open-source archaeology, defined as encompassing the ethical imperative for open public access to the results of publicly-funded research practical solutions to open-data projects open-source software applications in archaeology public information sharing projects in archaeology open-GIS and the open-context system of data management and sharing. This edited volume is designed to discuss important issues around open access to data and software in academic and commercial archaeology, as well as to summarise both the current state of theoret
¥834.00
【童书99选5】Open-Book Management: Coming Business Revolution, Th
¥24.00
【预订】Open Building Research 9783035622584 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783035622584 Format 版本 精装 Pages Number 页数 348页 Publisher 出版社 Birkhaeuser Verlag Basel Publication Date 出版日期 2023-12-04 Product Dimensions 商品尺寸 33,0 x 24,0 Language 语种 其它（含多语） Book Contents 内容简介 Architekturschaffen im Dialog mit verschiedenen Disziplinen Paolo Brescia und Tommaso Principi haben OBR im Jahr 2000 als Design-Netzwerk zwischen Mailand, London und Mumbai gegründet, das neue Arten des zeitgen?ssischen Lebens untersucht. Ihre Arbeiten zielen auf eine sensible Architektur, stimulieren die Interaktion zwischen Mensch und Umwelt und reagieren damit auf die sich ?ndernden Bedürfnisse der Gesellschaft. Sie sollen sowohl das Gemeinschaftsgefühl f?rdern als auch individuelle Identit?ten st?rken. In diesem Buch stellen die Architekten Gestaltung als eine Gemeinschaftsaufgabe dar: Sie führen transdisziplin?re Diskussionen
¥779.00
【中商原版】Open Studio 英文原版 开放工作室:当代艺术家的diy艺术项目
¥560.00
【预订】Open Service Management Foundation 9781940917207 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781940917207 Format 版本 平装-胶订 Publisher 出版社 Open Service Management Alliance Publication Date 出版日期 2018-04-26 Language 语种 英语
¥479.00
【预订】Open-Access, Multimodality, and Writing Center Studies 9 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783319695044 Author 作者 Buck Format 版本 精装 Pages Number 页数 148页 Publication Date 出版日期 2017-12-04 Product Dimensions 商品尺寸 8.2 x 5.8 x 0.5 cm Shipping Weight 商品重量 416g Language 语种 英语 Book Contents 内容简介 The disciplinary triad of open-access, multimodality, and writing center studies presents a timely, critical lens for discussing academic publishing in a moment of crucibilic change, where rapid technological advancements force scholars and institutions to question what is produced and “counts” as academic writing. Using historiographic, quantitative, and qualitative analysis, Open-Access, Multimodality, and Writing Center Studies sees writing center scholarship as a microcosm of many of the larger issues at play in the contemporary academic publishing landscape. This case study approach reveals the complex, imbricated ways that
¥787.00
【预订】Open Source Systems: Integrating Communities: 12th Ifip 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783319818443 Format 版本 平装-胶订 Pages Number 页数 224页 Publisher 出版社 Springer Publication Date 出版日期 1800-01-01 Product Dimensions 商品尺寸 9.2 x 6.1 x 0.4 cm Shipping Weight 商品重量 700g Language 语种 英语
¥745.00
《少年盟约》像《挪威的森林》一样寂静哀伤；像《麦田守望者》一样激烈疯狂；青春，是一首怎样的歌？小说以两位十六岁的少年为主角，将新闻、案件报告及课堂作文和少年日记等各种文体糅合在一起，讲述青少年成长中的友谊困惑与迷茫。文字既细腻柔情，又疯狂执迷，弥漫一种清新、哀伤的气息，作者也因此被读者称为“青春 人”。非常适合成长中的青少年阅读。这是一本讲述少年情谊的青春小说。创作的青春小说，多是异性情感为主线，而这本小说以同性情谊为主题，讲述了少年在成长中对于友谊的渴望与坚守。在一段歃血为盟般的友谊里，两位性格与生活完全不同的好友既收获了相遇、相知的惊喜与狂热，又尝到了相异带来的矛盾与困惑。他们的故事对于许多青春期的读者而言，会是一本“自己”的书。少年情怀总是诗，十六岁那年的夏天，两个异质
¥72.75定价：¥146.50 (4.97折)
OPEN-WIRECARRIERTELEPHONETRANSMISSION 书籍非全新 85-99成新，以实拍图为准发货，介意勿拍
¥70.40定价：¥77.44 (9.1折)
Open Secret 公开秘密 军情5处前女局长斯特拉·雷明顿自传
¥98.00
【预售 按需印刷】Open a GLAM Lab 北京发货，付款后10天内发货
¥115.00
【预订】Open Microfluidics 9781118720806 美国库房发货，通常付款后3-5周到货！
¥3191
【预订】Open The Preschool Door 9781524771744 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781524771744 Author 作者 SANTORO Format 版本 精装 Publisher 出版社 Penguin Random House US Publication Date 出版日期 2019-05-28 Language 语种 英语
¥57.00
【预订】Open-Air Shakespeare: Under Australian Skies 美国库房发货，通常付款后3-5周到货！
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【预订】Open Multithreaded Transactions 9789048164745 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9789048164745 Author 作者 Kienzle Format 版本 平装-胶订 Pages Number 页数 279页 Publisher 出版社 Springer Netherlands Publication Date 出版日期 2010-12-25 Language 语种 英语
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【预订】Open to the Infinite Riches of the Universe 9781618 美国库房发货，通常付款后3-5周到货！
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【预订】Open Distributed Processing: Experiences with Distribute 美国库房发货，通常付款后3-5周到货！
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【预售 按需印刷】Open the Safe of Thoughts for Success
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【预订】Open Wide Y9781456784836 美国库房发货，通常付款后3-5周到货！
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【中商原版】Open String Bow Workouts for Violin 进口艺术 小提琴开弦弓练习，第一册
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【预订】Open Source Systems: Long-Term Sustainability 9783642428 国外库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9783642428791 Author 作者 Hammouda Format 版本 平装-胶订 Pages Number 页数 406页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2014-10-15 Product Dimensions 商品尺寸 9.2 x 6.1 x 0.8 cm Shipping Weight 商品重量 646g Language 语种 英语 Book Contents 内容简介 This book constitutes the refereed proceedings of the 8th International IFIP WG 2.13 Conference on Open Source Systems, OSS 2012, held in Hammamet, Tunisia, in September 2012. The 15 revised full papers presented together with 17 lightning talks, 2 tool demonstration papers, 6 short industry papers, 5 posters and 2 workshop papers were carefully reviewed and selected from 63 submissions. The papers are organized in topical sections on collaboration and forks in OSS projects, community issues, open education and peer-production models, integration and architecture, busine
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【预订】Open Santa’S Door (Brd) 9780593179017 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9780593179017 Author 作者 SANTORO Format 版本 精装 Publisher 出版社 Penguin UK Publication Date 出版日期 2020-09-15 Language 语种 英语
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【预订】Open And Toroidal Electrophoresis - Ultra-High Separatio 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781119539407 Author 作者 Tarso Ledur Kist Format 版本 精装 Pages Number 页数 288页 Publisher 出版社 Wiley Publication Date 出版日期 2020-02-13 Language 语种 英语
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【预售 按需印刷】Open the Safe of Be a Millionaire Now
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【预订】Open Borders and International Migration Policy: The Eff 美国库房发货，通常付款后3-5周到货！
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【预订】Open and Distance Learning in the Developing World 美国库房发货，通常付款后3-5周到货！
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