Diaz, Ralph C. <br/><br/>
Case studies of farm families Laguna province, Philippines / 
Ralph C. Diaz, Horst Von Oppenfeld & Judith Von Oppenfeld 
 - Laguna :      Philippines University, College of Agriculture ,  1962 
 - iv, 92p. :  ill. ;  30 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Philippines<br/>Laguna, Philippines<br/>Case studies<br/>Rural conditions
<br/><br/><label>Dewey Class. No.: </label>630.9914  / DIA