Levin, Harold L. 1929- The earth through time / Harold L. Levin. - 6th ed. - Fort Worth : Saunders College Pub., c1999. - 1 v. (various pagings) : ill. (some col.), col. maps ; 29 cm. - Saunders golden sunburst series . Includes bibliographical references and index. ISBN: 0030237513 LCCN: 98084385 Subjects--Topical Terms: Historical geology. LC Class. No.: QE28.3 / .L48 1999 Dewey Class. No.: 551.7