Eco.survey of industrial labour. 

 -  1952 
 - 174p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>University Education
<br/><br/><label>Dewey Class. No.: </label>x:9.236.N5t4, J2/GD