Labor in [various countries.  

 - Rev.  
 - Washington]  1956- 
 - v.  illus., maps.  27 cm. 
<br/><br/><label>LCCN: </label>l  56000153  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor and laboring classes.
<br/><br/><label>LC Class. No.: </label>HD4815  / .U5