Clays and clay minerals ; proceedings of the ninth... 

 - New York :  Pergamon,  1962 
 - 614 p.  : ilus. 
<br/><br/><label>LCCN: </label>30624 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arcilla.<br/>Arcilla--Congresos.
<br/><br/><label>Dewey Class. No.: </label>553.6106  / N38 1960