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Wolters, H.

Visscher, J.T. & Wolters, H., 1989. Slow sand filtration : a simple and reliable method to purify drinking water. , pp.p. 20-26: fig., tab.

Published on: 29/12/2004

de Vries, J. et al., 1987. Sanitaire voorzieningen in Limeense krottenwijken : een voorstel tot verbetering, Delft, The Netherlands: Delft University of Technology, ISP. Available at: https://www.ircwash.org/sites/default/files/827PELI87-7205.pdf.

Published on: 29/12/2004

de Vries, J. et al., 1987. Servicios sanitarios en los pueblos jovenes de Lima : una propuesta para mejorar la situacion, Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering. Available at: https://www.ircwash.org/sites/default/files/827-6195.pdf.

Published on: 01/01/1970

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