Monthly labor review . 

 - Washington  Bureau of labor statistics .     1968 
 - 133  cm. 
<br/><br/><label>Standard No.: </label>154858 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X : 9M . 73 . N68, K8 . 91(7)"