Biblio

T. F. Clasen y Haller, L., «Water quality interventions to prevent diarrhoea: cost and cost-effectiveness». World Health Organization (WHO), Geneva, Switzerland, p. iii, 33 p. : fig., tab., 2008.

G. Hutton, Haller, L., y Bartram, J., «Economic and health effects of increasing coverage of low cost household drinking-water supply and sanitation interventions to countries off-track to meet MDG target 10 : background document to the "Human Development Report 2006"». World Health Organization (WHO), Geneva, Switzerland, p. xiii, 53 p. : 16 fig., 26 tab., 2007.