@book{153136,
	author = {Leet, L. Don. and Judson, Sheldon.},
	title = {Physical geology /},
	publisher = {Prentice-Hall,},
	year = {c1982.},
	address = {Englewood Cliffs, N.J. :},
	edition = {6th ed.},
	note = {Includes index.}
}