Essentials of physical geography 
Robert E. Gabler ... [et al.] 
 - 2nd ed. 
 - Philadelphia  Saunders College Pub  c1982 
 - vii, 568 p., [32] p. of plates  ill. (some col.)  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geography--Text-books--1945-
<br/><br/><label>Dewey Class. No.: </label>551