Vaughan, Lawrence Moore,  1898- <br/><br/>
Farm work simplification 
by Lawrence M. Vaughan [and] Lowell S. Hardin. 
 - New York,  J. Wiley  [1949] 
 - xii, 145p.  illus.  22cm. 
<br/><br/> "This publication is jointly sponsored by the work simplification committees of the American Farm Economic Association and the American Society of Agricultural Engineers." 
<br/><br/>"Further reading" at the end of each chapter. 
<br/><br/><label>LCCN: </label>agr49000428  
<br/><br/><label>LC Class. No.: </label>S561  / .V3 
<br/><br/><label>Dewey Class. No.: </label>631.1