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Organization (as author)
- Dibblee Geology Center274
- Stanford Geological Survey185
- Geological Survey (U.S.)77
- Thomas W. Dibblee, Jr. Geological Foundation72
- California. Division of Mines and Geology41
- U.S. Coast and Geodetic Survey30
- Sanborn Map Company27
- United States Coast Survey24
- Britton & Rey.20
- Los Padres National Forest (Calif.)16
- Santa Barbara Museum of Natural History16
- Angeles National Forest (Agency : U.S.)14
- California State Mining Bureau13
- United States. Forest Service11
- California Geological Survey9
- Rand McNally and Company8
- Britton & Co.6
- Southern Pacific Company6
- Walt Disney Productions6
- Clason Map Co.5
