SALES, Clement G.; JAVIER, Reynaldo R. GREEN MANURE AND NPK EFFECTS ON THE YIELD OF SWEET POTATO IN ERODED SOIL. Annals of Tropical Research, [S. l.], v. 2, n. 4, p. 213–218, 1980. Disponível em: https://atr.vsu.edu.ph/article/view/811. Acesso em: 6 dec. 2025.