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免费或开放获取   有限制   专家推荐   机器抓取   馆员登记
1 About.com -- Forestry 开放资源 机器抓取
  The web site is a portal to forestry websites, part of about.com,compiled by About,Inc(devoting to collect web resources,cover more than 50,000 subjects with over 1 million links)....
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2 Academic Archive On-line (DiVA) 开放资源 馆员登记
  DiVA portal is a finding tool and an institutional repository for research publications and student theses written at 28 universities and colleges of higher education. ;...
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3 Antarctic Master Directory - A Global Change Master Directory Portal 开放资源 机器抓取
  Antarctic Master Directory - A Global Change Master Directory Portal;...
  详细信息

4 ATSDR Toxic Substances Portal 开放资源 馆员登记
  ...
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5 北极网关 未开放资源 机器抓取
  北极网关是一个有关北极的专题信息网关,通过提供北极的相关信息来促进公众和私人团体的合作。;The Arctic Portal provides a comprehensive gateway to the Arctic on the internet, increases co-operation between both public and privat...
  详细信息

6 Belgian Data Portal 开放资源 馆员登记
  This portal provides access to biodiversity data pertaining to Belgium. It is an initiative of the Belgian Biodiversity Platform, the Belgian node of the Global Biodiversity Info...
  详细信息

7 Bioportal 开放资源 专家推荐
  ...
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8 Canada’s clean energy technologies portal 开放资源 专家推荐
  Climate change is a complex global challenge requiring real solutions to reduce greenhouse gas emissions and accelerate the transition to a low-carbon future. Canadas investment an...
  详细信息

9 Canadian Geoscience Knowledge Network (CGKN) 开放资源 机器抓取
  The Canadian Geoscience Knowledge Network (CGKN) is an initiative of the National Geological Surveys Committee (NGSC) to provide an Internet portal to Canadian geoscience informati...
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10 Cancer Nanotechnology Laboratory (caNanoLab) portal 开放资源 专家推荐
  caNanoLab is a data sharing portal designed to facilitate information sharing in the biomedical nanotechnology research community to expedite and validate the use of nanotechnology...
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