Earth science curriculum project, American Geologist Institute. <br/><br/>
Investigating the Earth. 

 - New York :  Houghton Millan,  c 1972. 
 - xiv, 593 p. :  ill. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/>338  338 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Earth sciences.
<br/><br/><label>Dewey Class. No.: </label>550 / E76i