Protection of the health of workers in places of employment :  fifth item on the agenda/ 
International Labour Office, Geneva 
 - Geneva :  International Labour Office,  1952 - 1953 
 - 2 v. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial hygiene<br/>Workers--Health and Hygene
<br/><br/><label>Dewey Class. No.: </label>331.063