Ehlers, Ernest G.. <br/><br/>
Optical mineralogy:Mineral descriptions /  
by Erest G.Ehlers. 
 - 1st.Edn. /  
 - Palo Alto :   Blackwell Scientific Publication. 
 - ix,286p ;  
<br/><br/><label>ISBN: </label>0-86542-324-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>C5:55(H1)  / M7.2