Biblio

E. Perez, Cardosi, J., Coombes, Y., Devine, J., Grossman, A., Kullmann, C., Kumar, C. A., Mukherjee, N., Prakash, M., Robiarto, A., Setiawan, D., Singh, U., and Wartono, D., “What does it take to scale up rural sanitation?”. Water and Sanitation Program, WSP, S.l., p. vii, 47 p.; 9 fig.; 6 tab.; 2 ill.; 2 boxes, 2012.

E. Perez and Parkinson, J., “Taking sanitation to scale”, Waterlines, an international journal of water, sanitation and waste, pp. p. 2-4 : photogr., 2006.

P. Kolsky, Perez, E., Vandersypen, W., and L. Jensen, O., “Sanitation and hygiene at the World Bank : an analysis of current activities”, vol. no. 6. World Bank, Washington, DC, USA, p. vii, 19 p. : 4 boxes, 14 fig., 4 tab., 2005.