Winchell, N. H. <br/><br/>
Elements of optical mineralogy  : an introduction to microscopic petrographu 

 - New York :  Van Nostrand,  1909 
 - 502 p.  : ilus. 
<br/><br/><label>LCCN: </label>51877 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogía.<br/>Optica.<br/>Petrología.
<br/><br/><label>Dewey Class. No.: </label>549.12  / W55