Earth science / 
Robert Heller ...[et al.]. 
 - 2nd ed. 
 - New York :  McGraw-Hill,  c 1979. 
 - 468 p. :  ill. ;  26 cm. 
 - Challenges to science. .
<br/><br/> Includes index. 
<br/><br/>337  337 
<br/><br/><label>ISBN: </label>0-07-028038-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences--Textbooks.<br/>Astronomy--Textbooks.
<br/><br/><label>Dewey Class. No.: </label>550.7 / H367c