Spock, L. E. <br/><br/>
Guide to the study of rocks. 

 - 2nd ed. 
 - New York :  Harper & Row,  1953. 
 - 298 p. :  il. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrología<br/>Roca
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>552