Pearle, Lester I. <br/><br/>
Case study data on productivity and factory performance.  Farm implements (harrows, cultivators, plows, and mowers) 

 - Washington :  U.S. Govt. Print. Off.,  1954. 
 - vi, 251 p. :  ill. ;  26 cm. 
 - BLS report ;  no. 52 .
<br/><br/><label>LCCN: </label>l  54000023  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor productivity--United States.<br/>Agricultural machinery industry--United States.
<br/><br/><label>LC Class. No.: </label>HD8051  / .A7876 no. 52