Publisher
- Gap Analysis Program (U.S.)60
- Geological Survey (U.S.)29
- Ocean Tipping Points Project22
- Northeast Ocean Data11
- Bay Area Open Space Council9
- Fire and Resource Assessment Program (Calif.)6
- County of San Mateo Information Services Department2
- National Atlas of the United States2
- United States. National Ocean Service2
- World Resources Institute2
- Bakersfield (Calif.). Office of City Manager1
- California. Department of Fish and Game. Marine Resources Region1
- Environmental Systems Research Institute (Redlands, Calif.)1
- Nationale geologiske undersøgelser for Danmark og Grønland1
- Santa Clara County (Calif.). Planning Office1
- Tehama County Public Works1
- U.S. Fish and Wildlife Service1
- UNEP World Conservation Monitoring Centre1
- United States. Bureau of Transportation Statistics1