International labour conference sixty six session 1980 

 - Geneva  International labour office Geneva       1981 
 - 1342p  cm. 
<br/><br/><label>Standard No.: </label>14,742 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:9p1,N0, M1