Marshak, Stephen, 1955- Earth : portrait of a planet / Stephen Marshak ; with contributions from Donald Prothero. - New York : Norton, c2001. - xvi, 735 p. : col. ill. ; 28 cm.+ 1 computer optical disc (4 3/4 in.) Includes bibliographical references and index. ISBN: 0393974235 (pbk.) LCCN: 00048031 Subjects--Topical Terms: Geology. LC Class. No.: QE26.2 / .M365 2001 Dewey Class. No.: 550