2 1 10 Pedoman norma kerja perkebunan kelapa sawit pada lahan mineral = Buku 2 , pemeliharaan TBM, Pemeliharaan TM dan Panen. Iman Yani Harahap Primary Author PUSAT PENELITIAN KELAPA SAWIT Additional Author TEGUH WAHYONO Primary Author Ambar Kurniawan Primary Author Ratnawati Nurkhoiry Primary Author Arsyad D. Koedadiri Primary Author M. Akmal Agustira Primary Author Djafar Moechtar Primary Author mixed material 9798529677 Medan PPKS 2006 12674.jpg.jpg Pedoman norma kerja perkebunan kelapa sawit pada lahan mineral = Buku 1, Pembukaan Lahan, Pembibitan, Penanaman Iman Yani Harahap Primary Author PUSAT PENELITIAN KELAPA SAWIT Primary Author TEGUH WAHYONO Primary Author Ambar Kurniawan Primary Author Ratnawati Nurkhoiry Primary Author Arsyad D. Koedadiri Primary Author M. Akmal Agustira Primary Author Djafar Moechtar Primary Author mixed material 9798529669 Medan Pusat Penelitian Kelapa Sawit 2006 12673.jpg.jpg