von Oppenfeld, Horst <br/><br/>
The pilot study in farm development / 
Horst von Oppenfeld, Leopoldo De Guzman, P., Florentino Librero &  Jesus C. Sta Iglesia 
 - Laguna :  Philippines University, College of Agriculture ,  1964 
 - vii, 112p. :  ill. ;  22 cm.  
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural development--Philippines
<br/><br/><label>Dewey Class. No.: </label>630.89  / VON