National Industrial Conference Board.  x <br/><br/>
The five day week in manufacturing  x 

 - x 
 - N.Y.  N.I.C.B  1929 
 - xi,69p. 
<br/><br/>
<br/><br/><label>ISBN: </label>x  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industries-Economic Industries-Economic 
<br/><br/><label>Dewey Class. No.: </label>338/NAF