Philippine. University. College of Agriculture <br/><br/>
The pilot study in farm development / 
[by] Horst von oppenfeld [and others]. 
 -  College, Laguna,  1964. 
 - vii, 112 p. illus. 26 cm 
<br/><br/><label>LC Class. No.: </label>FIL 630  / P53