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1 SpringerLink -- Journals 未开放资源 馆员登记
  Knowledge, information and quality – these are the three things that shape Springer Science+Business Media’s business activities. We develop, manage and disseminate knowledge – thr...
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2 Agriscape 开放资源 机器抓取
  Agriscape was started in April, 1999 as a directory on agriculture and its surrounding industry. The main goal of the site is to provide information, marketing services and search ...
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3 (21a) Applying Kepler′s Third Law 开放资源 馆员登记
  A series of practical examples of the application of Kepler's Third Law, including orbiting satellites, and the space shuttle. This page forms part of the larger From Stargazers to...
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4 Digital Library of Theses and Dissertations of the University of São Paulo (BDTD-USP) 开放资源 机器抓取
  The Digital Library of Theses and Dissertations of University of São Paulo was created aiming to make available, under the World Wide Web, the accumulated knowlegde of works from U...
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5 UNESCO 开放资源 馆员登记
  UNESCO works to create the conditions for dialogue among civilizations, cultures and peoples, based upon respect for commonly shared values. It is through this dialogue that the wo...
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6 National Bioversity indicators Portal 开放资源 馆员登记
  国家生物多样性指标门户网站是有关国家生物多样性指标信息的主要来源。这个门户网站是一个2010生物多样性指标合作伙伴关系(2010 BIP)的同伴网站,它提供了全球水平的指标信息。 这个网站为支持生物多样性指标的发展和高效应用提供了指导和例子。这些能力建设资源是UNEP-WCMC和2010 BIP超过五年的经验的产品。它是被设计用来支持国家级别的生物多样性指标...
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7 MIT OpenCourseWare 开放资源 馆员登记
  MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity. IT OpenCourseWare i...
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8 Lady Bird Johnson Wildflower Center--Image Gallery 开放资源 馆员登记
  From this page you can browse the monthly "in Bloom", view a photographer's work or special collection, or use the search bar to find a specific image. All thumbnails are linked to...
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9 An Atlas of The Universe 开放资源 馆员登记
  This web page is designed to give everyone an idea of what our universe actually looks like. There are nine main maps on this web page, each one approximately ten times the scale o...
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10 EarthSky: a clear voice for science 开放资源 机器抓取
  Based in Austin, Texas, EarthSky began producing its award-winning science content in 1991. Today, EarthSky science interviews and other audio and video content are seen, heard, or...
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