International labour office, Geneva <br/><br/>
Man in his working environment : a workers education manual 

 - Geneva  International labour office  c1979 
 - xii,142p. : ill.tables ; 24cm. 
<br/><br/><label>ISBN: </label>9221020606 
<br/><br/><label>Dewey Class. No.: </label>331.2  / INT