Marshak, Stephen, 1955- Earth : portrait of a planet / Stephen Marshak ; with contributions from Donald Prothero. - New York : Norton, 2001. - xvi, 735, A-12, B-3, G-23, C-4, I-48 p. : ill. ; 28 cm.+ 1 computer optical disc (4 3/4 in.) Includes bibliographical references and index. ISBN: 0393974235 9780393974232 LCCN: 00048031 Subjects--Topical Terms: Geology. LC Class. No.: QE26.2 Dewey Class. No.: 550 M354e 2001 C-