@book{17753,
	author = {Longwell, Chester R. and Knopf, Adolph,},
	title = {Outlines of physical geology /},
	publisher = {J. Wiley & sons, inc.;},
	year = {1941.},
	address = {New York ;},
	edition = {2d ed.},
	note = {Includes index.}
}