Marsh, William M. Earthscape : a physical geography / William M. Marsh. - New York : Wiley, c1987. - xv, 510, [80] p. : ill. (some col.), maps (some col.) ; 29 cm. ISBN: 0471850551 LCCN: 86028209 LC Class. No.: GB54.5 .M367 1987 / .M367 1987 Dewey Class. No.: 910/.02