Grim, Ralph Early <br/><br/>
Clay mineralogy 

 - 2a ed. 
 - New York  McGraw-hill Book Company  1968 
 - 596 p.  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ARCILLAS
<br/><br/><label>Universal Decimal Class. No.: </label>553.611/G82