TY - BOOK AU - Marshak,Stephen TI - Earth: portrait of a planet SN - 9780393938173 AV - QE26.3 .M36 2015 U1 - 550 23 PY - 2015///] CY - New York PB - W.W. Norton & Company KW - Geology KW - Textbooks N1 - Includes bibliographical references and index ER -