Van Den Ban,A.W / Hawkins,H.S <br/><br/>
Agricultural extension -2e 

 - Blackwell Science 
<br/><br/><label>ISBN: </label>063204053X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>630.715 VAN