Finalis ER, Sri Djangkung SM, Arfiana, Noor I, Suratno H, Rosyadi E, Saputra H, Noda R. Development of Carbon Based NPK Slow Release Fertilizer using Biochar from Oil Palm Empty Fruits Bunch. IJE [Internet]. 2020Feb.28 [cited 2024Nov.20];3(1):19-4. Available from: https://mail.ije-pyc.org/index.php/IJE/article/view/45