Monthly review of the U.S. Bureau of labor statistics . 

 - Washington  Govt.Printing office           1917 
 - 1328p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X : 9m . 73 . N17, E7 . 5 1(1)