Trends in output per man-hour in the private economy, 1909-1958. 

 - Washington,  U.S. Bureau of Labor Statistics,   1959. 
 - iv, 47, A46 p.  diagrs., tables.  26 cm. 
 - Its Bulletin,  no. 1249 .
 - Bulletin of the United States Bureau of Labor Statistics ;  no. 1249. .
<br/><br/><label>LCCN: </label>l  60000017  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor productivity.
<br/><br/><label>LC Class. No.: </label>HD8051  / .A62 no. 1249