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

 - 2nd ed. 
 - New York  Harper and row, publishers  1953 
 - xvi,256p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology<br/>Rock
<br/><br/><label>Dewey Class. No.: </label>552  / SPO