Organiscak, John A. <br/><br/>
Factors affecting respirable dust generation from longwall roof supports 
Organiscak, John A. 
 - Washington  Bureau of mines  1985 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>POLVO DE MINAS<br/>VENTILACION EN LAS MINAS
<br/><br/><label>Universal Decimal Class. No.: </label>622.411.5