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1 A Compendium of On-Line Soil Survey Information 开放资源 机器抓取
  网站由国际航空宇宙与地球科学研究所(ITC)土壤科学分部的David G. Rossiter副教授编写。网站提供了大量的有关土壤调查科学的活动、研究所、数据库、研究项目及教学材料等方面的网站链接目录,目录按分类组织,包括:土壤调查研究所、土壤调查活动、土壤分类、应用软件和模型、调查方法与科学技术、土壤评价、土壤调查分类、计算机程序、期刊以及图片等方面的网站。...
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2 About.com -- Geography 开放资源 机器抓取
  Tools for geographers of the United States including Vicinity MapBlast which produces US street maps, lists of languages spoken around the world, and summary data for US counties. ...
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3 AcademicInfo -- Geology 开放资源 机器抓取
  AcademicInfo is an online education resource center with extensive subject guides and distance learning information. Our mission is to provide free, independent and accurate inform...
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4 Agriculture and Environment Resources 开放资源 机器抓取
  Set of links to agriculture and environment resources. Includes the National Dairy Database and USDA Food Composition.It also contains College of Agriculture and Natural Resources,...
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5 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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6 AllConferences.Com -- Science Conferences 开放资源 机器抓取
  It is part of the site of AllConferences.Com. AllConferences.Com is a searchable directory focusing on conferences, conventions, trade shows, exhibits, workshops, events and busine...
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7 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;...
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8 Australian Spatial Data Directory (ASDD) 开放资源 机器抓取
  The Australian Spatial Data Directory (ASDD) is a national initiative supported by all governments under the auspices of ANZLIC - the Spatial Information Council. The ASDD aims to ...
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9 Biocollections.org 开放资源 机器抓取
  。The Biodiversity and Biocollections webserver is one of the oldest (ancient by Internet time) sites to provide information about biodiversity, biological collections, and associat...
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10 BUBL 开放资源 机器抓取
  BUBL uses the Dewey Decimal Classification system as the primary organisation structure for its catalogue of Internet resources. Selected Internet resources covering all academic ...
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