@inproceedings{inproceedings1db44219, title = {Geophysical studies of grounwater contamination at two studies in São Paulo state, Brasil}, author = {Greenhoouse, J. P. and Williams, Mark Monier and Ellert, Nelson and Mendes, José Milton Benetti}, year = {1988}, publisher = {International Development Research Centre}, booktitle = {Conferencia Latinoamerica sobre Hidrología Urbana} }