Creator
- Gap Analysis Program (U.S.)60
- California. Farmland Mapping and Monitoring Program47
- Golden, Nadine E.42
- Pacific Coastal and Marine Science Center39
- International Association of Seismology and Physics of the Earth's Interior28
- International Heat Flow Commission28
- Oklahoma State University. Department of Geography. Cartography Service28
- Johnson, Samuel Y.23
- Hartwell, Stephen R.21
- Manson, Michael W.21
- Bay Area Open Space Council20
- Conservation Lands Network20
- GreenInfo Network (Firm)20
- San Francisco Bay Area Upland Habitat Goals Project20
- Greene, H. G.17
- United States. Department of Housing and Urban Development16
- California. Department of Water Resources14
- Moss Landing Marine Laboratories14
- Dartnell, Peter10
- Endris, Charles A.10