Geology of the Healdsburg quadrangle, California - Gealey, William Kelso, 1918-1993.; Switzer, George S. (George Shirley), 1915-2008.; California. Division of Mines (San Francisco, 1951)
Part of illustrative matter in pocket.
"References": p. 48-50.
Keywords: Geology -- California -- Sonoma County; Mineralogy -- California -- Sonoma County; Schists