International Occupational Safety and Health Congress (Geneva, 30 Ju ne-4 July 1969). 

 - Geneva :    International Labour Office,    [1970. 
 - v. ;    24 cm. 
 - Occupational safety and health series, 25 .
 - Occupational safety and health series ;    25. .
<br/><br/>  "Held on the occasion of the 50th anniversary of the International L abour Organisation." 
<br/><br/>v. 2. Summaries. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Industrial safety -- Congresses.<br/> Industrial hygiene -- Congresses.