Dietrich, R. V.  1924- <br/><br/>
Gems, granites and gravels :  knowing and using rocks and minerals / 
R. V. Dietrich and Brian J. Skinner 
 - Cambridge :  The University Press,  1990 
 - viii, 173 p., [32] p. of plates :  ill. (some col.) ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0521344441 :  PND 15.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy<br/>Petrology
<br/><br/><label>Dewey Class. No.: </label>549