Biblio

J. E. M. Smet, «Domestic rainwater harvesting». Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, Loughborough, UK, p. 4 p. : 10 fig., 2003.

N. P. Armitage y Rooseboom, A., «The removal of litter from stormwater conduits in the developing world», Water science and technology, pp. p. 277-284 : 8 fig., 1999.

L. H. Belz, «Precasting fibrous ferrocement sanitary units». Lloyd H. Belz, Nuku'alofa, Tonga, p. 46 p.: photogr., techn. drwgs, 1986.

R. Hahn, «Handpump testing and development: part 3 : new design : particle separator, foot valve and rod guide». Lund University, Institute of Technology, Department of Environmental Engineering, Lund, Sweden, p. 15 p.: fig., photogr., 1983.