Wages and hours of labor in the metal trades in Massachusetts,  1914-1919 ... September, 1920. 

 - Boston,  Wright & Potter Prining Company, state printers,  1920. 
 - 72 p.  23 cm. 
 - Labor bulletin  no. 132 .
<br/><br/> Part III of the Annual report on the statistics of labor for 1920.  At head of title: The commonwealth of Massachusetts. Department of Labor and Industries. E. Leroy Sweetzer, commissioner. Division of Statistics. Roswell F. Phelps, director. 
<br/><br/><label>LCCN: </label>l  21000074  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wages--Massachusetts.<br/>Hours of labor.<br/>Metal-workers--Massachusetts.
<br/><br/><label>LC Class. No.: </label>HC107.M4  / A3 no. 132