Filho, Moacyr Bernardino Dias, and Miguel Simão Neto. “Agronomic and Economic Efficiencies of a Partially Acidulated Rock Phosphate on <i>Brachiaria brizantha< i> Cv. Marandu in a Forest Soil in the Amazon Region”. Pesquisa Agropecuaria Brasileira, vol. 27, no. 3, Mar. 1992, pp. 395-01, doi:10.1590/S1678-3921.pab1992.v27.3661.