Winchell, Alexander N. <br/><br/>
Elements of optical mineralogy :  an introduction to microscopic petrography / 
by Alexander N. Winchell with collaboration of Horace Winchell. 
 - 4th ed. 
 - New York :  Wiley,  c1951. 
 - xvi, 551 p. : ill. 
<br/><br/><label>ISBN: </label>0471952710 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical mineralogy.