Joint ILO/WHO Committee on Occupational Health [meeting held in Geneva from 18 to 23 March 1957] : third report. 

 - 22p. 
 - (WHO technical report series ; 135) .
<br/><br/><label>ISBN: </label>92-4-120135-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Occupational medicine--Education