Yearbook of Labour Statistics 1991. 

 - Geneva:  Pub.Inter.Labour Office,  0 
 - 1132 pp. 
 - 50th edition .
<br/><br/><label>ISBN: </label>9220073390 
<br/><br/><label>Subjects--Index Terms: </label>Yearbook of Labour Statistics 1991. 
<br/><br/><label>Dewey Class. No.: </label>331  / Y39