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Author
- Smith, Walter H. F.13
- Wessel, Paul13
- Bay Area Open Space Council8
- Conservation Lands Network8
- GreenInfo Network (Firm)8
- San Francisco Bay Area Upland Habitat Goals Project8
- Circuit Rider Productions5
- California. Division of Mines and Geology4
- Kelso, Nathaniel Vaughn4
- Patterson, Tom4
- Santa Clara Valley Water District (Calif.)4
- California Geological Survey2
- California. Department of Water Resources2
- Egypt. Jihāz al-Markazī lil-Taʻbiʼah al-ʻĀmmah wa-al-Iḥṣāʼ2
- Environmental Resources Research Institute2
- National Atlas of the United States2
- San Joaquin County (Calif.). Community Development Department2
- von Dohlen, Jerry2
- California. Department of Conservation1
- Carey, Mathew, 1760-18391