14 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 Eka Nuryanto Additional Author Tjahjono Herawan Additional Author Hasril Hasan Siregar Additional Author Amir Purba Additional Author Endang Susilawati Additional Author Wayan Reda Susila Additional Author Simon P. Ginting Additional Author Rizaldi Boer Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1997 cover_warta_vol5no2.jpg Kabul Pamin Additional Author Z. Poeloengan Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Purboyo Guritno Additional Author Christa U. Ginting Additional Author Eka Nuryanto Additional Author TEGUH WAHYONO Additional Author A. Sipayung Additional Author Amir Purba Additional Author Angga Jatmika Additional Author Donald Siahaan, Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1997 cover_warta_vol5no1.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 Agus Susanto Additional Author Winarna Additional Author Agus Eko Prasetyo Additional Author Donald Siahaan Additional Author Yurna Yenni Additional Author Nasrullah Additional Author Hari Priwiratama Additional Author Sri Wening Additional Author E.S. Sutarta Additional Author Frisda R. Panjaitan Additional Author Amir Purba Additional Author K. Murtilaksono Additional Author Harimurti Buntaran Additional Author S. Sabihan Additional Author A. Sutandi Additional Author Tua Parulian Sianipar Additional Author Bambang Drajat Additional Author Sri Suryanti Additional Author Delima H. Darmawan Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 2014 Cvr_JPKSv22n1april14.JPG Agus Susanto Additional Author Winarna Additional Author Agus Eko Prasetyo Additional Author Donald Siahaan Additional Author Yurna Yenni Additional Author Hernawan Yuli Rahmadi Additional Author Ambar Kurniawan Additional Author Sri Wening Additional Author Ernayunita Additional Author E.S. Sutarta Additional Author Frisda R. Panjaitan Additional Author Amir Purba Additional Author K. Murtilaksono Additional Author A. Sutandi Additional Author Abdul Razak Purba Additional Author Arfan Nazrhi Simamora Additional Author A. Sabiham Additional Author Giyanto Additional Author Bonar M. Sinaga Additional Author Nunung Kusnadi Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 2014 Cvr_JPKSv22n2Agus14.JPG PURBA, Amir Additional Author mixed material Bogor IPB 1991 Cvr_Pengaruh_defoliasi_....JPG Pemeliharaan tanaman kelapa sawit menghasilkan PUSAT PENELITIAN KELAPA SAWIT Additional Author Edy Sigit Sutarta Primary Author Nuzul Hijri Darlan Primary Author Amir Purba Primary Author Petrus Purba Primary Author B H Sitanggang Primary Author mixed material 9798529596 Medan PPKS 2005 12605.jpg.jpg Tanaman penutup tanah dan gulma pada kebun kelapa sawit. Buku II Witjaksana Darmosarkoro Primary Author Sudharto Prawirosukarto Primary Author PUSAT PENELITIAN KELAPA SAWIT Primary Author Endang Syamsuddin Primary Author Amir Purba Primary Author mixed material Medan 2005 2100144.jpg.jpg