Creator
- World Wildlife Fund (WWF)27
- Food and Agriculture Organization of the United Nations2
- California Geological Survey1
- California. Department of Conservation1
- California. Division of Mines and Geology1
- Carey, Mathew, 1760-18391
- GeoX Kft.1
- Marshall, Gerald1
- Mendes, Eric1
- Stanford University. Center for Spatial and Textual Analysis1