[1]
Cardoso, A. et al. 1992. Comparative study of soil degradation in the northwest of ParanĂ¡ state. Pesquisa Agropecuaria Brasileira. 27, 2 (Feb. 1992), 349–353. DOI:https://doi.org/10.1590/S1678-3921.pab1992.v27.3656.