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1 U-Now Open Courseware (U-Now) 开放资源 馆员登记
  U-Now is The University of Nottingham’s collection of open educational materials that have been openly licenced for anyone to use. The materials range from complete modules to smal...
  详细信息

2 U.S. Geological Survey: Maps, Imagery, and Publications 开放资源 机器抓取
  This site contains a compilation of USGS geologic and thematic maps (not topographic maps) and map data that can be downloaded (files in ARC/INFO export format, for example) or vie...
  详细信息

3 Uganda Biofuels Atlas 开放资源 馆员登记
  The map is powered by a Geographic Information System (GIS) data server that dynamically prepares the maps. Use the icons on the top right to zoom in and out of the map, or the han...
  详细信息

4 Ukrainian Map Server 开放资源 机器抓取
  This is a Ukrainian Map Server. The purpose is to provide reasonably detailed maps of Ukraine to aid users in their search for cities, towns, and villages that may not appear on co...
  详细信息

5 Ultra High Density (UHD) Potato map database 开放资源 专家推荐
  Ultra dense recombination map of potato;...
  详细信息

6 UM CSE Course Webs 开放资源 馆员登记
  The resources discussed here include: Instructional hardware and software computing facilities. Groups and accounts for instructional staff and students. Disk space for holding ...
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7 United Nations Atlas of the Oceans 未开放资源 馆员登记
  The UN Atlas of the Oceans is an Internet portal providing information relevant to the sustainable development of the oceans. It is designed for policy-makers who need to become fa...
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8 United States Department of Agriculture --plants Database 开放资源 馆员登记
  The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. It includes names, plan...
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9 US Virtual Astronomical Observatory User Documentation 开放资源 专家推荐
  The purpose of this tutorial is to demonstrate the pan-archive search, interrogate, data retrieval and visualization features of the Data Discovery Tool.;...
  详细信息

10 USDA Plant Hardiness Zone Map 开放资源 机器抓取
  This map supersedes U.S. Department of Agriculture Miscellaneous Publication 814, "Plant Hardiness Zone Map," which was revised in 1965. This 1990 version shows in detail the lowe...
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