Browsing Koha by Author "Tampubolon, F.H. 43873."
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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. -
Oil palm responses to nitrogen and phosphate fertilizer in Sumatra.
1989 PORIM International Palm Oil Development Conference. Agriculture. 1989. September 5-9, Kuala Lumpur, Malaysia 43431.; Daniel, C. 40990.; Ochs, R. 42737.; Tampubolon, F.H. 43873.