@book{28119,
	author = {Frye, John Chapman, and Swineford, Ada,},
	title = {Silicified rock in the Ogallala formation /},
	publisher = {s.n.],},
	year = {1946.},
	series = {Kansas. State Geological Survey. Bulletin},
	address = {[Lawrence, Kan. :},
	note = {"1946 Reports of studies, part 2, July 1, 1946."}
}