@book{29142,
	author = {Chesterman, Charles Wesley, and Schmidt, Frederick Sommer, and California.},
	title = {Pumice, pumicite, and volcanic cinders in California,},
	year = {1956.},
	series = {California.  Division of Mines.  Bulletin,},
	address = {San Francisco,},
	note = {Part of illustrative matter folded in pocket.}
}