Fertilizer experimentation on oil palm in North Sumatra.
Malaysian International Agricultural Oil Palm Conference. International Developments in Oil Palm
june 14-17 :
Kuala Lumpur. Proceedings :
45846.; Akbar, Ummar
45791.; Amiruddin, D.
45792.; Ollagnier, M.
42063.; Tampubolon, F.H.
43873.