@book{17737,
	author = {Schuchert, Charles, and Dunbar, Carl Owen,},
	title = {A textbook of geology :},
	publisher = {J. Wiley,},
	year = {1941.},
	address = {New York :},
	edition = {4th ed.},
	note = {Successor to Pirsson and Schuchert's "Textbook of geology."}
}