5 1 10 Iman Yani Harahap Additional Author Witjaksana Darmosarkoro Additional Author Agus Susanto Additional Author Heri Santoso Additional Author Donald Siahaan Additional Author Yurna Yenni Additional Author Hernawan Yuli Rahmadi Additional Author Edy Sigit Sutarta Additional Author Hasril Hasan Siregar Additional Author Nanang Supena Additional Author Ratnawati Nurkhoiry Additional Author Sri Wening Additional Author Erwinsyah Additional Author Abdul Razak Purba Additional Author Mohamad Arif Additional Author Erna Yunita Additional Author mixed material 14103362 Medan Pusat Penelitian Kelapa Sawit 2013 Cvr_Laptah_PPKS_thn2013.JPG PPKS Additional Author DARNOKO Additional Author Luqman Erningpraja Additional Author Heri Santoso Additional Author Condro Utomo Additional Author Heri Adriwan Siregar Additional Author Hasril Hasan Siregar Additional Author Nanang Supena Additional Author Sujadi Additional Author Bagus Giri Yudanto Additional Author Abdul Razak Purba Additional Author Yahya Sudirman Additional Author Elis Kartika Additional Author Herawan Yuli Rahmadi Additional Author Sri Wilarso Additional Author mixed material 0853196X Medan PPKS 2006 cvr_14_N3_2006.JPG PPKS Additional Author Tjahjono Herawan Additional Author Yurna Yenni Additional Author Condro Utomo Additional Author Yusran Pangaribuan Additional Author Nanang Supena Additional Author Ratnawati Nurkhoiry Additional Author Muhammad Akmal Agustira Additional Author Abdul Razak Purba Additional Author S. Warwel Additional Author Djafar Additional Author F. Niepold Additional Author D. Tambajong Additional Author H. B. Deising Additional Author Nazly Aswani Additional Author M. Rusch gen. Klaas Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 2005 cvr13_N2_2005.JPG Eka Nuryanto Additional Author Iman Yani Harahap Additional Author PUSAT PENELITIAN KELAPA SAWIT Additional Author Suroso Rahutomo Additional Author Eko Noviandi Ginting Additional Author Hasril Hasan Siregar Additional Author Nanang Supena Additional Author Nuzul Hijri Darlan Additional Author Eka LIstia Additional Author Ambar Kurniawan Additional Author Ratnawati Nurkhoiry Additional Author Zulfi Prima Sani Nasution Additional Author Iput Pradiko Additional Author Muhdan Syarovy Additional Author Ellen Additional Author Muhayat Additional Author Tito Sucipto Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 2017 Cvr_Warta_PPKS_V22N3_Okt_2017.JPG Karakteristik Bahan Tanaman Unggul PPKS dan Pola Pengelompokannya di Pembibitan Edy Suprianto Additional Author PUSAT PENELITIAN KELAPA SAWIT Primary Author Yurna Yenni Additional Author A. Razak Purba Additional Author Nanang Supena Additional Author Sujadi Additional Author mixed material 979852956I Medan PPKS 2005 12589.jpg.jpg