Guide to central labour legislation for workers in 

 -  1963 
 - Labour bureau pamphlet series, 5. .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>X9(HZ):9:(Z2).N6, K3