Ventura, M.

Foster, S., Ventura, M. & Hirata, R., 1987. Groundwater pollution : an executive overview of the Latin American - Caribbean situation in relation to potable water-supply, Lima, Peru: Pan American Center for Sanitary Engineering and Environmental Sciences. Available at: https://es.ircwash.org/sites/default/files/WHO-1987-Grondwater.pdf.