@book{30395,
	author = {Schlicker, Herbert G. and Deacon, Robert J.,},
	title = {Engineering geology of the Tualatin Valley region, Oregon,},
	year = {1967.},
	series = {Oregon. Dept. of Geology and Mineral Industries. Bulletin},
	address = {Portland,},
	note = {Scale of maps 1:48,000.}
}