7 1 10 Z. Poeloengan Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Iman Yani Harahap Additional Author Fatmawati, Gale Ginting Additional Author Amir Purba, Suroso Rahutomo Additional Author Subronto, Dwi Asmono Additional Author Syamsul Anwar Additional Author P.L. Tobing, Z. Poeloengan Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 2000 cover_warta_vol8no2.jpg Kabul Pamin Additional Author Z. Poeloengan Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Edy Suprianto Additional Author Dwi Asmono Additional Author TEGUH WAHYONO Additional Author A. Razak Purba Additional Author Gale Ginting Additional Author Fatmawati Additional Author Ferry Salman Additional Author SUGIYONO Additional Author Nadjib Fauzy Additional Author Petrus Purba Additional Author P.L. Tobing Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1998 cover_warta_vol6no3.jpg Kabul Pamin Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Purboyo Guritno Additional Author Iman Yani Harahap Additional Author Edy Suprianto Additional Author Dwi Asmono Additional Author Suroso Rahutomo Additional Author Gale Ginting Additional Author Fatmawati Additional Author Sjafrul Latif Additional Author Angga Jatmika Additional Author P. L. Tobing Additional Author Diwan Prima Arina Additional Author H. Asmady Additional Author M. Kohar Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1999 cover_warta_vol7no3.jpg Kabul Pamin Additional Author Daswir Additional Author Z. Poeloengan Additional Author Adlin U. Lubis Additional Author Dj. Pardede Additional Author PPKS Additional Author Kusnu Martoyo Additional Author Rachmat Adiwiganda Additional Author Hasril Hasan Siregar Additional Author Amir Purba Additional Author Angga Jatmika Additional Author Petrus Purba Additional Author P.L. Tobing Additional Author Adiwiganda, Y. Taryo Additional Author Sjukri Hamid Additional Author C.U. Ginting Additional Author H. Wibowo Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1996 cover_warta_vol4no3.jpg Z. Poeloengan Additional Author Adlin U. Lubis Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Gale Ginting Additional Author Fatmawati Additional Author Amir Purba Additional Author ADIWIGANDA, Rachmat Additional Author Angga Jatmika Additional Author P.L. Tobing Additional Author Subronto, Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1996 cover_warta_vol4no1.jpg BOYKE Loebis dan P.L.Tobing Primary Author mixed material Marihat Ulu, Pematang Siantar PTP VI-VII & Puslit Marihat 1985 PT.PERKEBUNAN_VI-VII.JPG.JPG Ir. S B.SImanjuntak Additional Author Ir.Meneth Ginting Additional Author Ir. Mangasa P.L Tobing Additional Author Ir. J.A. Napitupulu Additional Author H.L.T.Gultom Additional Author mixed material Medan survey agro ekonomi indonesia fakultas pertanian univ. sumatera utara 1992 survey_produk_dan_tata_niaga_sajur_di_sumatera_utara_1972.jpg