Monteiro, José de Anchieta. “Degree of Maize Production Concentration in Tile South-Central Region of Brazil”. Pesquisa Agropecuaria Brasileira 29, no. 7 (July 1, 1994): 1007–1017. Accessed July 5, 2026. https://apct.sede.embrapa.br/pab/article/view/4142.