Graves, Howard Bradley. <br/><br/>
The mineral key  
by Howard Bradley Graves.  
 - 1st ed. 
 - New York,  McGraw-Hill Book Co.,  1947. 
 - viii, 178 p.  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERALOGIA
<br/><br/><label>Universal Decimal Class. No.: </label>548