Cardoso, Alcides, Reinaldo Oscar Potter, and Renato Antonio Dedecek. “Comparative Study of Soil Degradation in the Northwest of Paraná State”. Pesquisa Agropecuaria Brasileira 27, no. 2 (February 1, 1992): 349–353. Accessed March 25, 2026. https://apct.sede.embrapa.br/pab/article/view/3656.