OTIE, V. O.; AN, P.; AKPAN, J. P.; ENEJI, A. E. AVAILABLE PHOSPHORUS FRACTIONS IN SOILS FROM DORO, KATSINA STATE, NIGERIA. Faculty of Agriculture International Conference Book of Proceedings, Nigeria, p. 180–190, 2026. Disponível em: https://www.jafe.net.ng/index.php/bookofproceedings/article/view/205. Acesso em: 4 may. 2026.