J. E. Turner,
«Finance and cost recovery». Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. 5 p., 1987.
P. Roark, Baker, J. S., y Buzzard, H. A. C.,
«Privatization study of the village water supply and sanitation (VWSS) project Lesotho», vol. no. 215. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ix, 133 p.: tab., fig., 1987.
A. A. Churchill,
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X. Mu, Whittington, D., y Briscoe, J.,
«Willingness to pay for water in rural areas : methodological approaches and an application in Haiti», vol. no. 213. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ix, 93 p.: fig., tab., 1987.