9 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 Ir. Ch.Hutauruk Additional Author Ir. A.U.Lubis Additional Author Ir. E.L.Tobing Additional Author Ir. H. S. Situmorang Additional Author R. P. Manurung Additional Author mixed material Pematang Siantar Pusat Penelitian Marihat 1983 IMG_20190218_0001_.jpg Ir. Ch.Hutauruk Additional Author Ir. A.U.Lubis Additional Author Ir. E.L.Tobing Additional Author R. P. Manurung Additional Author Ir.H.S. Situmorang Additional Author mixed material Pematang Siantar Pusat Penelitian Marihat 1983 1_.jpeg Ir. Ch.Hutauruk Additional Author Ir. Endang Syamsuddin Additional Author Ir. Adlin U. Lubis Additional Author E.L. Tobing Additional Author K. Wolpers Additional Author mixed material Pematang Siantar Pusat Penelitian Marihat 1982 COVER_NO.2_VOL.2.jpg Endang Syamsuddin Additional Author Sudharto Ps Additional Author Ir. Adlin U. Lubis Additional Author Ch. Hutauruk Additional Author Ir. Ridwan A .Lubis Additional Author mixed material Pematang Siantar Pusat Penelitian Marihat 1983 COVER_NO.3_VOL.4.jpg Ir. Ch.Hutauruk Additional Author Ir. A.U.Lubis Additional Author Ir. E.L.Tobing Additional Author Ir. A.Sipayung Additional Author Ir. Soedharto Ps. Additional Author Ir. Suheimi Syukur Additional Author Ir. P.Purba Additional Author mixed material Pematang Siantar Pusat Penelitian Marihat 1982 COVER_VOL.3_No.2.jpg Endang Syamsuddin Additional Author Sudharto Ps Additional Author Ir. Adlin U. Lubis Additional Author Ch. Hutauruk Additional Author Ir. Ridwan A .Lubis Additional Author mixed material Pematang Siantar Grafina P.Siantar 1983 COVER_NO.3_VOL.4.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 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