4 1 10 PUSAT PENELITIAN KELAPA SAWIT Primary Author Manurung, Adelina Additional Author mixed material Medan PPKS 1998 Abstrak_Hasil_Penelitian_Pusat_Penelitian_Kelapa_Sawit_1988-1996.jpg PUSAT PENELITIAN KELAPA SAWIT Additional Author Manurung, Adelina Additional Author mixed material 9798529308 Medan PPKS 2003 Abstrak_Hasil_Penelitian_Pusat_Penelitian_Kelapa_Sawit_199-200.jpg Manurung, Adelina Additional Author mixed material Bogor Fak. Pasca Sarjana IPB 1986 Cvr_Model_peramalan...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