550 Marshak, Stephen, Earth : portrait of a planet / Stephen Marshak. - 4th ed. - New York : W. W. Norton, c2012. - 1 v. (various pagings) : col. ill., col. maps ; 28 cm. - Includes bibliographical references and index. ISBN: 9780393935189 (pbk.) LCCN: 2011035758 Түлхүүр үг: Geology, Textbooks. LC Class. No.: QE26.3 / .M36 2012