Cecala, Andrew B. <br/><br/>
Reducing dust exposure of workers during bag stacking in enclosed vehicles 
Cecala, Andrew B. 
 - Washington  Bureau of mines  1987 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>CONTROL DE POLVO EN GENERAL
<br/><br/><label>Universal Decimal Class. No.: </label>622.807