Conventions and recommendations 

 - Geneva  International labour office Geneva       1969 
 - 1176p  cm. 
<br/><br/><label>Standard No.: </label>19,982 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:9p1.N66-N19, K9