Foundry supervisory training:   Molding and core sands 

 - Washington:   Agency for International Development,  
 - vi, 61p. 
 - Training manual no. 136 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manual
<br/><br/><label>Universal Decimal Class. No.: </label>621.744:658.5