Schutz, L.A. <br/><br/>
Airborne asbestos fiber concentrations in asbestos mines and mills in the United States (BM-TPR 72) 
Schutz, L.A. 
 - Washington  Bureau of mines  1973 
<br/><br/><label>Subjects--Topical Terms: </label><br/>VENTILACION EN LA MINA<br/>MINAS DE AMIATO<br/>CONTROL DE LAS CONDICIONES AMBIENTALES
<br/><br/><label>Universal Decimal Class. No.: </label>622.4