Dietrich, Richard Vincent,  1924- <br/><br/>
Gems, granites, and gravels :  knowing and using rocks and minerals / 
R.V. Dietrich and Brian J. Skinner. 
 - Cambridge ;  New York :  Cambridge University Press,  1990. 
 - viii, 173 p., [32] p. of plates :  ill. (some col.) ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0521344441 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy.<br/>Petrology.
<br/><br/><label>LC Class. No.: </label>QE363.2  / .D52 1990 
<br/><br/><label>Dewey Class. No.: </label>549