Tomb, Thomas F. <br/><br/>
Standard calibration and maintenance procedures for wet test meters and coal mine respirable dust samplers (Supersedes IR 1073) 
Tomb, Thomas F. 
 - Washington  Departement of labor  1980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINUET<br/>CONTROL DE LAS CONDICIONES AMBIENTALES<br/>FUENTES DE POLVO EN LAS MINAS
<br/><br/><label>Universal Decimal Class. No.: </label>622.411.5