Roberts, Lincoln Willard <br/><br/>
Encyclopedia of minerals 

 - New York  Van Nostrand reinhold company  1974 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia  Encyclopedia of minerals  Roberts, Lincoln Willard  Mineralogy  gems  
<br/><br/><label>Dewey Class. No.: </label>549  / L4