1.
Umar WK, Agustiyar F, Rahma A. Verification of the Walkley Black Method Test for Determination of Organic Carbon Elements in Palm Oil Empty Fruit Bunch Waste Fertilizer. Eksergi [Internet]. 2022 Aug. 10 [cited 2025 Jul. 15];19(3):97-103. Available from: https://jurnal.upnyk.ac.id/index.php/eksergi/article/view/7267