Biblio

S. Foster, Hirata, R., Gomes, D., D'Elia, M., and Paris, M., Groundwater quality protection : a guide for water service companies, municipal authorities and environment agencies. Washington, DC, USA: World Bank, 2002, p. vii, 103 p. : fig. tab.

S. Foster, Ventura, M., and Hirata, R., “Groundwater pollution : an executive overview of the Latin American - Caribbean situation in relation to potable water-supply”. Pan American Center for Sanitary Engineering and Environmental Sciences, Lima, Peru, p. v, 38 p.: fig., tab., 1987.