Gabler, Robert E. Essentials of physical geography / Robert E. Gabler, Robert J. Sager & Daniel L. Wise. - 5th edition - Fort Worth : Saunders College Pub., c1997. - 125 p. ; 28 cm. - Saunders study mate . ISBN: 9780030058233 0030058236 Subjects--Topical Terms: Physical geography. Dewey Class. No.: 551 / GAB