NAGARAJA, M.S.; RAMAKRISHNA PARAMA, V.R. Soil biological parameters as indicators of sustainability of natural and agricultural land use systems. Annals of Tropical Research, [S. l.], v. 22, n. 1&2, p. 89–104, 2000. Disponível em: https://atr.vsu.edu.ph/article/view/492. Acesso em: 22 dec. 2024.