Heady, E.O.  <br/><br/>
Roots of the farm problem : changing technology, changing capital use, changing labor needs  (Book) 

 - 1st ed. 
 - Iowa  The Iowa State University Press  1965 
 - 224 p.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects--United States
<br/><br/><label>Universal Decimal Class. No.: </label>338.976 : 631.1 HEA  / 8006