TY - BOOK AU - Marshak,Stephen TI - Earth: portrait of a planet SN - 9780393935189 (pbk.) AV - QE26.3 .M36 2012 U1 - 550 23 PY - 2012/// CY - New York PB - W. W. Norton KW - Geology KW - Textbooks N1 - Includes bibliographical references and index ER -