Agustiyani D, Yamagishi T. Denitrification of Activated Sludge in The Presence of Different Organic Substrates. Ann. Bogor. [Internet]. 2004 Dec. 9 [cited 2026 Oct. 8];9(2):59-71. Available from: https://ejournal.brin.go.id/annales/article/view/7100