Winchell, Alexander N. <br/><br/>
Elements of optical mineralogy  an introduction to microscopic petrography / 
Winchell, Alexander N.; with collab. of Horace Winchell. 
 - 4e ed., 6e dr. 
 - XVI, 551 p.  ill. 
<br/><br/> Includes bibliographical notes and index. 
<br/><br/>2.  Descriptions of mineral with special reference to their optical and microscopical characters 
<br/><br/><label>Subjects--Topical Terms: </label><br/>549--Mineralogy. Special study of minerals<br/>548.735--Determination of crystal structure and texture