Pearl, Richard Maxwell,  1913- <br/><br/>
How to know the minerals and rocks / 
by Richard Maxwell Pearl 
 - New York :  McGraw-Hill,  1955 
 - 192 p. :  ill. ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy, Determinative<br/>Rocks--Identification