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

 - New York  Harper and Brothers Publishers  1953 
 - 256 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology 
<br/><br/><label>Dewey Class. No.: </label>552  / Sp61g 1953