- International Association of Seismology and Physics of the Earth's Interior36
- International Heat Flow Commission36
- Oklahoma State University. Department of Geography. Cartography Service36
- California Geological Survey16
- California. Department of Conservation14
- Marshall, Gerald14
- Mendes, Eric14
- Instituto Brasileiro de Geografia e EstatÃstica6
- Rosenberg, Lewis I.4
- Fire and Resource Assessment Program (Calif.)3
- Monterey County (Calif.)3
- Bethe, Anne-Laure1
- Blackburn, Laura1
- Faucherre, Nicolas, 1957-1
- Geological Survey (U.S.)1
- Gherdevich, Davide1
- Hopkins Marine Station1
- Lannoo, Michael J.1
- Nanjappa, Priya1
- National Atlas of the United States1
