Assessment of Soil Fertility Management Practices under Small Holder Systems in Kafin Madaki Area Bauchi State. Mediterranean Journal of Social Sciences, [S. l.], v. 5, n. 26, p. 107, 2014. Disponível em: https://www.richtmann.org/journal/index.php/mjss/article/view/5281.. Acesso em: 17 aug. 2024.