Guedes, J.C.F. 2016. Applied Environmental Zoning the Watershed Environmental Characterization of the Brazilian Semiarid Strategy: A Case Study on Watershed Rio Barra Nova -RN / PB. Notheast Geoscience Journal. 2, (Oct. 2016), 1012–1024. DOI:https://doi.org/10.21680/2447-3359.2016v2n0ID10564.