Labor productivity 
edited by John T. Dunlop and Vasilii P. Diatchenko 
 - N.Y.  McGraw - Hill  1964 
 - 409p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor productivity --United States
<br/><br/><label>Dewey Class. No.: </label>T2531 D921