Sevenorio, P. L. and Escalada, R. G. (1983) “EFFECT OF STAGE OF DECOMPOSITION OF GREEN MANURE ON THE GROWTH AND YIELD OF SWEET POTATO”, Annals of Tropical Research, 5(2), pp. 61–68. Available at: https://atr.vsu.edu.ph/article/view/731 (Accessed: 5 December 2025).