9 1 10 Safarini, Fitri Primary Author mixed material Medan Universitas Sumatera Utara (USU) 2022 WhatsApp_Image_2023-07-24_at_09.01.52.jpeg.jpeg Petrokimia Gresik Primary Author mixed material Gresik Petrokimia Gresik 2022 WhatsApp_Image_2023-07-03_at_11.46.49.jpeg.jpeg IFA Primary Author mixed material [s.l] [s.n] 1996 WhatsApp_Image_2023-07-18_at_09.08.03.jpeg.jpeg Leijenaar, G.H.A. Additional Author mixed material Wageningen H. Veenman & Zonen 1932 Cvr_Fijnheid_en_Verdeeling.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 Antisipasi Menghadapi Kelangkaan dan Kenaikan Harga Pupuk; Menelisik Kesiapan dan Potensi Pupuk Organik Palembang 27-28 Juli 2010 PUSAT PENELITIAN KARET SEMBAWA Additional Author mixed material 9789796080250 Palembang Pusat Penelitian Karet Sembawa 2010 Prosiding_%28Seminar_Nasional_Teknologi_Pemupukan_2010%29.jpg Badan Penelitian dan Pengembangan Pertanian Additional Author mixed material Jakarta Badan Litbang Pert. 1990 Lokakarya_Nasional_efisiensi_.jpg Charlotte Hebebrand Additional Author Claudine Aholou Putz Additional Author mixed material Paris, France International Fertilizer Industry Association 2015 Cvr.._fertilizerMAY2015.JPG Charlotte Hebebrand Additional Author Claudine Aholou Putz Additional Author mixed material Paris, France International Fertilizer Industry Association 2015 Cvr_fertilizerfeb2015.JPG