Publisher
- University of Minnesota. Institute on the Environment1,099
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- Cartography Associates135
- Geological Survey (U.S.)131
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- California. Department of Fish and Game. Marine Resources Region78
- Stanford University. Center for Spatial and Textual Analysis73
- National Atlas of the United States54
- U.S. Geological Survey40
- Virtual Shanghai Project37
- Bay Area Open Space Council22
- National Geophysical and Solar-Terrestrial Data Center19
- North American Cartographic Information Society12
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- County of Santa Cruz Information Services Department3
- National Geophysical Data Center3
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