[1]
V. B. Asio, K. L. B. Demain, D. T. Olguera, and L. J. D. Villasica, “Characteristics and Nutrient Status of Two Degraded Upland Soils in Samar, Philippines”, Ann. Trop. Res, vol. 37, no. 1, pp. 142–166, May 2015.