@book{8914,
	author = {Longwell, Chester R. and Knopf, Adolph},
	title = {Outlines of physical geology},
	publisher = {J. Wiley & sons, inc.},
	year = {1939.},
	series = {Physical geology, Outlines of.},
	address = {New York},
	edition = {2d ed.}
}