International labour standards 

 - 2nd 
 - Geneva  International labour office Geneva       1982 
 - 102p  cm. 
<br/><br/><label>Standard No.: </label>14,720 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:9.1.N7t6, M2