Creator
- Gap Analysis Program (U.S.)60
- Bay Area Open Space Council1
- California. Farmland Mapping and Monitoring Program1
- IUCN--The World Conservation Union1
- National Atlas of the United States1
- Nature Conservancy (U.S.)1
- Stackhouse, Cecil1
- Tehama County Public Works1
- UNEP World Conservation Monitoring Centre1
- United States. Bureau of Transportation Statistics1
- United States. Department of Commerce1
- United States. National Ocean Service1
- United States. National Oceanic and Atmospheric Administration1