Monthly labor reviews . 

 - United  states Bureau of labor statistics     1961 
 - 1434  cm. 
<br/><br/> Appendix .95p . 
<br/><br/><label>Standard No.: </label>154849 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X : 9m . 73 .N61, KI .84 (1)"