McClelland, John J. <br/><br/>
Investigation of dust sources and control technology for longwall plow operations 
McClelland, John J. 
 - Washington  Bureau of mines  1988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>POLVO DE MINAS<br/>CONTROL DEL POLVO EN LAS MINAS<br/>TECNOLOGIA MINERA
<br/><br/><label>Universal Decimal Class. No.: </label>622.807