[1]
Silva, A.B. da et al. 1999. Characterization of the physical environment in the quatro bocas watershed in Angelim, PE, and its quantification by a geographic information system. Pesquisa Agropecuaria Brasileira. 34, 1 (Jan. 1999), 109–117. DOI:https://doi.org/10.1590/S1678-3921.pab1999.v34.5145.