Thomas, Gerald W. <br/><br/>
Progress and change   : in the agricultural industry 
Gerald W.Thomas 
 - Lowa:  WMC Brown Book,  1969. 
 - xiv, 178p. 
<br/><br/> PB 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>630  / THP