6 1 10 R.Sukarji G.Simangunsong dan Ch.Hutauruk Primary Author mixed material Marihat Ulu, Pematang Siantar Puslitbun Marihat 1985 PT.PERKEBUNAN_VI-VII.JPG.JPG Endang Syamsuddin Additional Author R.A. Lubis Additional Author Fidber Chan Additional Author Sudharto Ps Additional Author Suwandi Additional Author A.U. Lubis Additional Author Ch. Hutauruk Additional Author R. Sukarji Additional Author Herman Halim Additional Author Kusnu M Additional Author Y.R. Lubis Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1984 COVER_VOL.4_NO.1_APRIL_1984.jpg Adlin U. Lubis Additional Author Endang Syamsuddin Additional Author A. Sipayung Additional Author Sudharto Ps Additional Author Suheimi Syukur Additional Author R. Sukarji Additional Author T.L. Tombing Additional Author mixed material 02161427 Upper Saddle River, NJ Pusat Penelitian Marihat 1985 COVER_VO.5_NO.2_AGUSTUS_1985.jpg T.L. Tobing Additional Author Kusnu Martoyo Additional Author Suwandi Additional Author R. Sukarji Additional Author O.S. Dharmaputra Additional Author A.L. Abadi Additional Author W.P. Suwandi Additional Author R.Y Purba Additional Author E.M. Fadli Additional Author H. Susilo Additional Author A. Makmur Additional Author G. Rahayu Additional Author Nur Chairat Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Tanah 1989 COVER_VOL.9_NO.2_AGUSTUS_1989.jpg A. Sipayung Additional Author P. Purba Additional Author T.L. Tobing Additional Author Kiki Siregar Additional Author A.R. Purba Additional Author R. Sukarji Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1988 COVER_VOL.8_NO.1_APRIL_1988.jpg Kabul Pamin Additional Author Purboyo Guritno Additional Author Eka Nuryanto Additional Author Subronto Additional Author PPKS Additional Author Tjahjono Herawan Additional Author R. Sukarji Additional Author Edy Sigit Sutarta Additional Author FADZRI PURNOMO Additional Author DIWAN Prima Ariana Additional Author JENNY Elisabeth Additional Author Angga Jatmika Additional Author SUGIYONO Additional Author Sjafrul Latief Additional Author Krismawati Sinaga Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 1999 cvr_7_N1_1999.JPG