Bradley, W. F. <br/><br/>
Clays and clay minerals  proceedings of the 12th National Conference on Clays and Clay minerals, Atlanta, September 30-October 2, 1963 
Bradley, W. F. ed 
 - New York  MacMillan  1964 
 - xii, 692 p.  il  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>arcilla
<br/><br/><label>Universal Decimal Class. No.: </label>622