- Map Maker Ltd.102
- Fire and Resource Assessment Program (Calif.)62
- Gap Analysis Program (U.S.)60
- Golden, Nadine E.47
- Pacific Coastal and Marine Science Center44
- 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.25
- Hartwell, Stephen R.21
- Manson, Michael W.21
- Greene, H. G.17
- Moss Landing Marine Laboratories14
- Dartnell, Peter13
- Kvitek, Rikk G.13
- California. Department of Water Resources12
- Environmental Systems Research Institute (Redlands, Calif.)11
- Phillips, Eleyne L.11
- Endris, Charles A.10
- Watt, Janet T.10
