Edwards, George H. <br/><br/>
Sampling bulk industrial minerals and ores. A practival approach 
Edwards, George H. ; Harben, Peter W. 
 - Surrey  Industrial Minerals Information Limited  1999 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>INDUSTRIA MINERAL
<br/><br/><label>Universal Decimal Class. No.: </label>622