Peralta, C.H.

Peralta, C.H. & Santacruz, M., 1980. Slow sand filtration project : meeting of representatives of SSF-project countries, Nagpur, India, September 15-19, 1980 : status report on slow sand filtration project in Colombia, Rijswijk, The Netherlands: IRC. Available at: https://fr.ircwash.org/sites/default/files/71IRC80-1.11-8.pdf.