Winchell, Alexander N . <br/><br/>
Elements of Optical Mineralogy /  Textual Documents 
Alexander N Winchell. 
 - Ist edn / 
 - New Delhi :  Wiley Eastern ,  1968. 
 - 263p. ;  23cm. 
<br/><br/><label>Subjects--Index Terms: </label>Optical Mineralogy G- T/G T/G-Geology 
<br/><br/><label>Dewey Class. No.: </label>553.28  / W 721 El