Ruthenberg, Hans   . <br/><br/>
Innovation policy for small farmers in the tropics /  
by Hans Ruthenberg,edited by  Hans E Jahnke. 
 - New York :   Clarendon press ,   1985. 
 - xii,176p. :   ills.figs ;   26cm .  
<br/><br/>Includes index and bibliographies 
<br/><br/><label>ISBN: </label>0198594879  NULL 
<br/><br/><label>Subjects--Index Terms: </label>FARMS SMALL-TROPICS 
<br/><br/><label>Dewey Class. No.: </label>338.16  / RUT/I