1 1 10 Kabul Pamin Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Christa U. Ginting Additional Author Eka Nuryanto Additional Author Dwi Asmono Additional Author A. Sipayung Additional Author Chairul Muluk Additional Author Angga Jatmika Additional Author L. A. Napitupulu, Chairul Muluk Additional Author Sudharto Parwirosukarto Additional Author Renni Yuliasari Additional Author L. A. Napitupulu Additional Author Asmini Additional Author Djoko Santoso Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1998 cover_warta_vol6no1.jpg