Marshak, Stephen, Earth : portrait of a planet / Stephen Marshak. - 2nd ed. - New York : W.W. Norton, c2005. - xx, 748p.: ill.: pbk.; Includes index. ISBN: 0393925021 Subjects--Topical Terms: Geology--Textbooks. LC Class. No.: QE26.3 / .M36 2005 Dewey Class. No.: 550