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California Natural History Guides is a 5-book series with 5 primary works first released in 1962 with contributions by Harold Gilliam, Doris Sloan, and 4 others.
1962 • 1 Reader • 118 pages
2006 • 1 Reader • 360 pages
2007 • 1 Reader • 400 pages
Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions
2007 • 1 Reader • 4
2011 • 1 Reader • 335 pages