@book{28570,
	author = {Kulstad, Robert O. and Nixon, Earl K.,},
	title = {Kansas pits and quarries /},
	publisher = {University of Kansas Publications,},
	year = {1951.},
	series = {Kansas. State Geological Survey. Bulletin 90, pt. 1. 1951 Reports of studies, pt. 1},
	address = {Lawrence :},
	note = {Title page lacking.}
}