6 1 10 Pembibitan kelapa sawit Bagaimana memperoleh bibit yang jagur Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Witjaksana Darmosarkoro Additional Author Akiyat Additional Author Edy Sigit Sutarta Additional Author SUGIYONO Additional Author mixed material 9789798529818 Medan PPKS 2008 Cover_Pembibitan_Kelapa_Sawit.jpg Kelainan-kelainan pada kelapa sawit = Buku 1 Kecambah, prenursery dan main nursery. Witjaksana Darmosarkoro Primary Author PUSAT PENELITIAN KELAPA SAWIT Additional Author M. Lukman Fadli Primary Author Akiyat Primary Author mixed material Medan PPKS 2004 125470001.jpg.jpg Penyakit - Penyakit Pada Kelapa Sawit = Buku 2 Penyakit-penyakit non infeksi pada kelapa sawit. PUSAT PENELITIAN KELAPA SAWIT Additional Author Rolettha Y. Purba Primary Author Agus Susanto Primary Author Akiyat Primary Author mixed material Medan PPKS 2005 12563.jpg.jpg Daswir Additional Author LALANG BUANA Additional Author Dwi Asmono Additional Author DARNOKO Additional Author A. Razak Purba Additional Author Fatmawati Additional Author A.Sipayung Additional Author SOEMARTONO Additional Author Nasrullah Additional Author Tri Hutomo Additional Author Rachmat Adiwiganda Additional Author Zulkarnain Poeloengan Additional Author Akiyat Additional Author A.D. Koedadiri Additional Author A.U. Lubis Additional Author P.Purba Additional Author R.A.Lubis Additional Author Alex Hartana Additional Author Edi Guhardja Additional Author Sudirman Yahya Additional Author L.A. Napitupulu Additional Author G.Ginting Additional Author J.Brahmana Additional Author Iswandi Anas Additional Author mixed material Medan Pusat Penelitian Kelapa Sawit 1993 IMG_20190201_0001.jpg Kabul Pamin Additional Author LALANG BUANA Additional Author Purboyo Guritno Additional Author DARNOKO Additional Author Condro Utomo Additional Author A.Sipayung Additional Author Akiyat Additional Author R.A.Lubis Additional Author A.R. Purba Additional Author Adlin U.Lubis Additional Author E.Syamsuddin Additional Author R.Y. Purba Additional Author Adelina Manurung Additional Author E.Manalu Additional Author P.M. Naibaho Additional Author E. Gumbira-Sa\'id Additional Author mixed material Medan Pusat Penelitian Kelapa Sawit 1994 IMG_20190131_0001.jpg AKIYAT et al Additional Author mixed material Medan PPKS 2005