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

 - 2 
 -  1962 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>49605 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Petrology<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H2, K2