@book{28703,
	author = {Ver Planck, William Everett, and California.},
	title = {Gypsum in California.},
	publisher = {State of California, Dept. of Natural Resources, Division of Mines,},
	year = {1952.},
	series = {California.  Dept. of Natural Resurces.  Division of Mines.  Bulletin,},
	address = {San Francisco,},
	note = {Part of illustrative matter in pocket.}
}