[1]
Gonçalves, D.R.P. and Rocha, C.H. 2016. Indicators of water quality and land usage patterns in watersheds in the state of Paraná, Brazil. Pesquisa Agropecuaria Brasileira. 51, 9 (Oct. 2016), 1172–1183. DOI:https://doi.org/10.1590/S1678-3921.pab2016.v51.22142.