Sounrces and methods labour statistics. 

 - Geneva  ILO            1999 
 - xiv,499p.  cm. 
 -  Vol.9;14 .
<br/><br/><label>ISBN: </label>9220113295 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:9.1sn1N46,N, N9.9/UN