Levin, Harold L. 1929- The earth through time / Harold L. Levin. - 2nd ed. - Philadelphia : Saunders College Pub., c1983. - viii, 513, [51] p. : ill. (some col.), maps ; 27 cm. Includes bibliographies and index. ISBN: 0030583543 LCCN: 82010367 Subjects--Topical Terms: Historical geology--Textbooks. LC Class. No.: QE28.3 / .L48 1983 Dewey Class. No.: 551.7