Trachtenberg, Alexander,  1889- <br/><br/>
History of May Day / 
Alexander Trachtenberg 
 - Rev. ed. 
 - New York :  International Publisher,  1947 
 - 24 p. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Working class<br/>Collective bargaining<br/>Laber time<br/>International labor activities<br/>Labor day<br/>May day<br/>Hours of labor
<br/><br/><label>Dewey Class. No.: </label>331.81