Prantilia, Edmundo Barrios,  1940- <br/><br/>
Economic optimization models of multiple cropping system  applied to the Philippines /  [microform] : 
Edmundo Barrios Prantilia 
 - Ann Arbor, Mich. :  University Microfilms International,  1972 
 - 1 microfilm reel :  positif ;  35 mm. 
<br/><br/>Thesis (Ph.D.) - Iowa State University, 1972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Multiple--Cropping Systems--Philippine Islands