Rubber :  research papers :  workshop on national ... Los Banos, Laguna / 
director Romeo A. Obordo 
 - Los Banos :  Philippine Council for Agricultural Research,  1973 
 - 61 p. ;  24 cm. 
 - Crops Research Division (Workshop session)  no.25 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rubber--Philippine--Congresses