UMAR, Wakhid Khoirul; AGUSTIYAR, Fandika; RAHMA, Aulia. Verification of the Walkley Black Method Test for Determination of Organic Carbon Elements in Palm Oil Empty Fruit Bunch Waste Fertilizer. Eksergi, [S. l.], v. 19, n. 3, p. 97–103, 2022. DOI: 10.31315/e.v19i3.7267. Disponível em: https://jurnal.upnyk.ac.id/index.php/eksergi/article/view/7267. Acesso em: 15 jul. 2025.