7 1 10 PPKS Additional Author Iman Yani Harahap Additional Author Luqman Erningpraja Additional Author Donald Siahaan Additional Author G. Simangunsong Additional Author Taufiq Caesar Hidayat Additional Author Eka LIstia Additional Author Bagus Giri Yudanto Additional Author TRI HARYATI Additional Author Elis Kartika Additional Author Yusuf Hasibuan Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 2007 cvr_15_N3_2007.JPG Ch.Hutyauruk,Sudharto Ps G.Simangunsong dan A.Sipayung Primary Author mixed material Marihat Ulu, Pematang Siantar PTP VI-VII & Puslit Marihat 1985 PT.PERKEBUNAN_VI-VII.JPG.JPG R.Sukarji G.Simangunsong dan Ch.Hutauruk Primary Author mixed material Marihat Ulu, Pematang Siantar Puslitbun Marihat 1985 PT.PERKEBUNAN_VI-VII.JPG.JPG Pusat Penelitian Kelapa Sawit (PPKS) Additional Author SUGIYONO Additional Author Nadjib Fauzy Additional Author S. Rahutomo, E.S. Sutarta, Sugiyono Additional Author Hasril H. Siregar, Nuzul Hijri Darlan, Yusran Pangaribuan Additional Author Eka Listia, G. Simangunsong, Iman Y. Harahap, Hasril H. Siregar Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 2006 cover_warta_ppks_vol14no2.jpg Pusat Penelitian Kelapa Sawit (PPKS) Additional Author SUGIYONO Additional Author Donald Siahaan, Additional Author G. Simangunsong, Taufiq C. Hidayat, Hasril H. Siregar Additional Author Subronto, Dwi Asmono, A. Razak Purba Additional Author Condro Utomo, Daisy Tambajong Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 2005 cover_warta_vol13no3.jpg Iman Yani Harahap Primary Author Suroso Rahutomo Primary Author G. Simangunsong Primary Author Yusran Pangaribuan Primary Author Taufiq Caesar Hidayat Primary Author Edy Sigit Sutarta Primary Author Eka LIstia Primary Author mixed material 9789798529801 Medan PPKS 2008 Cvr_Mucuna_bracteata.JPG Adlin U. Lubis Additional Author A. Sipayung Additional Author P. Purba Additional Author Sudharto Ps Additional Author Ch. Hutauruk Additional Author G. Simangunsong Additional Author Kiswito Additional Author G. Manurung Additional Author I.M. Siregar Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1984 COVER_VOL.4_NO.2_AGUSTUS_1984.jpg