@book{28657,
	author = {Gealey, William Kelso, and Switzer, George S. and California.},
	title = {Geology of the Healdsburg quadrangle, California,},
	year = {1951.},
	series = {California.  Dept. of Natural Resources.  Division of Mines.  Bulletin 161},
	address = {San Francisco,},
	note = {Part of illustrative matter in pocket.}
}