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Williams, P.G.

Williams, P.G., 1988. Study of a horizontal-flow roughing filter for pretreatment prior to slow sand filtration, Available at: https://es.ircwash.org/sites/default/files/Williams-1988-Study.pdf.

Fecha publicación: 31/12/2004

A pilot plant study to assess the effectiveness of a horizontal roughing filter as a pretreatment to slow sand filters, was conducted over a 15...

Williams, P.G., 1987. A study of bacteria reduction by slow sand filtration, Pretoria, South Africa: National Institute for Water Research. Available at: https://es.ircwash.org/sites/default/files/255.1-6047.pdf.

Fecha publicación: 01/01/1970

Williams, P.G., 1983. Development of a borehole chlorinator for small communities. , pp.p. 55-67. Available at: https://es.ircwash.org/sites/default/files/254.2-3129.pdf.

Fecha publicación: 01/01/1970

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