Lima, M. P., C. E. B. dos Santos, F. V. Ribeiro, K. S. de C. Campos, and J. K. S. Mendonça. “Environmental Problems at the of Munim River Drainage Basin at the Town of Chapadinha - MA”. Sociedade & Natureza, vol. 1, no. 1, May 2005, doi:10.14393/SN-v1-2005-9718.