citation
van Koppen, Barbara; Smits, S.; Moriarty, P.; Penning de Vries, F.; Mikhail, M.; Boelee, Eline. 2009. Ascendiendo la escala del agua: servicios de abastecimiento de agua de usos multiples para la reduccion de la pobreza. In Spanish. [Climbing the water ladder: multiple-use water services for poverty reduction] Hague, Netherlands: International Water and Sanitation Centre (IRC); Colombo, Sri Lanka: International Water Management Institute (IWMI); Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food (CPWF). 232p. (IRC TP Series 52)