Hours of work in coal mines.  Forth item on the agenda. 

 - Geneva,  1949 
 - 58 p.  24 cm. 
<br/><br/> At head of title: Report 4. International Labour Organisation. Coal Mines Committee, 3d sess., Pittsburg, Apr. 1949. 
<br/><br/><label>LCCN: </label>l  49000093  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining.<br/>Coal miners.<br/>Hours of labor.
<br/><br/><label>LC Class. No.: </label>HD5119  / .C6 I5