Freund, Hugo. <br/><br/>
Applied Ore Microscopy  theory and technique 
by Hugo Freund 
 - New York  Macmillan  1966 
 - xxv, 607p. 
<br/><br/><label>LCCN: </label>66-11418 
<br/><br/><label>Dewey Class. No.: </label>622.7  / N66