International standard classification of occupations 

 - Geneva  ILO         1968 
 - "v,355p"  cm. 
<br/><br/><label>Standard No.: </label>99166 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Working Class
<br/><br/><label>Dewey Class. No.: </label>"Y49:3:11, J8;K8/UN"