14 1 10 A. Sipayung Additional Author P. Purba Additional Author T.L. Tobing Additional Author Kusnu Martoyo Additional Author Suwandi Additional Author Kiki Siregar Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1992 COVER_VOL.12_NO.1_PEBRUARI_1992.jpg Adlin U. Lubis Additional Author Suwandi Additional Author Kiki Siregar Additional Author Sri Wahyuni Additional Author Ridwan A. Lubis Additional Author S. Situmorang Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1991 COVER_VOL.11_NO.1_PEBRUARI_1991.jpg M. Lukman Fadli Additional Author P. Purba Additional Author Kiki Siregar Additional Author H. Suwandi Additional Author Okky S. Dharmaputra dan Widya Puspa Additional Author H. Adlin U. Lubis Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1991 COVER_VOL.11_NO.1_PEBRUARI_1991.jpg Adlin U. Lubis Additional Author Suwandi Additional Author Kiki Siregar Additional Author Sri Wahyuni Additional Author Ridwan A. Lubis Additional Author Situmorang Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1991 COVER_VOL._11_NO.2_APRIL_1991.jpg TEGUH WAHYONO Additional Author M. Lukman Fadli Additional Author A. Sipayung Additional Author R.A. Lubis Additional Author Rolettha Y. Purba Additional Author Sudharto Ps Additional Author Suwandi Additional Author R. Desmier De Chenon Additional Author P. Simatupang Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1992 COVER_VOL.12_NO.3_OKTOBER_1992.jpg Ir. H. Adlin U. Lubis Additional Author Ir. Endang Syamsuddin Additional Author Ir. H. Suwandi Additional Author Ir. H.S Situmorang Additional Author Ir. H. Ridwan H. Lubis Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1990 COVER_VOL.10_NO.3_DESEMBER_1990.jpg Endang Syamsuddin Additional Author Sudharto Ps Additional Author Suwandi Additional Author R. Desmier De Chenon Additional Author A.U. Lubis Additional Author B. Naert Additional Author R. Gal Additional Author J. Olivin Additional Author Desmier de Chenon Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1990 COVER_VO.10_NO.1_APRIL_1990.jpg Endang Syamsuddin Additional Author A. Sipayung Additional Author T.L. Tobing Additional Author Sudharto Ps Additional Author Suwandi Additional Author A.U. Lubis Additional Author B. Naert Additional Author R. Gal Additional Author J. Olivin Additional Author Desmier de Chenon Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1990 COVER_VO.10_NO.1_APRIL_1990.jpg A. Djamin Additional Author A. Sipayung Additional Author Fidber Chan Additional Author Kusnu Martoyo Additional Author Suwandi Additional Author Tejoyuwono Notohadiprawiro Additional Author Asep T. Toyib Additional Author R. Desmierde de Chenon Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1986 COVER_VOL.6_NO.2-3_DESEMBER_1986.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