Philipson, Warren Rodney,  1942- <br/><br/>
Philippine crop occurrence in relation to soil and climate factors  [microform] / 
Warren Rodney Philipson. 
 - Ann Arbor, Mich.:  University Microfilms International,  1975. 
 - 1 microfilm reel:  ill.positif;  35 mm. 
<br/><br/>Thesis (Ph.D.) - Cornell University, 1975. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture ecology.<br/>Crops and climate--Philippines.