J. Haratani, Webb, A. K., and C. Soyer, R.,
“Evaluacion final del proyecto de sistemas rurales de abastecimiento de agua y saneamiento ambiental Peru”, vol. no. 294. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xvi, 105 p.: chart, map, photogr., tab., 1990.
J. Haratani, Webb, A. K., and C. Soyer, R.,
“Final evaluation of the rural water systems and environmental sanitation project Peru”, vol. no. 294. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xv, 104 p.: chart, map, photogr., tab., 1990.
