Costa, F.F., Dias, J.C. and de Lima, W.N. 2009. HYDROGEOCHEMICAL EVALUATION IN SELECTED SITES OF THE MARACANÃ RIVER WATERSHED (NORTHEAST - PARÁ, BRAZIL). Holos Environment. 9, 2 (Jul. 2009), 167–182. DOI:https://doi.org/10.14295/holos.v9i2.1581.