Marshak, Stephen, 1955- Earth portrait of a planet / [Book] : Stephen Marshak. - 3rd ed. - New York : W.W. Norton, c2008. - 1 v. (various pagings) : col. ill., col. maps ; 28 cm. All. ISBN: 9780393930368 Subjects--Topical Terms: Geology--Textbooks. Dewey Class. No.: 550