Clays and clay minerals 
Proceedings of the Eleventh National Conference held on Ottawa, Ontario, Canada, August 13-17, 1962 
 - Oxford:   Pergamon Press,   1963 
 - ix, 368p. 
 - Earth science series  13 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Universal Decimal Class. No.: </label>55.061(05)