Asio, Victor B., Kier Lambert B. Demain, Dernie T. Olguera, and Leo Jude D. Villasica. “Characteristics and Nutrient Status of Two Degraded Upland Soils in Samar, Philippines”. Annals of Tropical Research 37, no. 1 (May 28, 2015): 142–166. Accessed December 22, 2024. https://atr.vsu.edu.ph/article/view/245.