K. P. R. S. Samarasinghe,
«Evaluation of water supply systems in selected small towns in Sri Lanka», vol. UWS-2007/10. UNESCO-IHE Institute for Water Education, Delft, The Netherlands, p. xv, 178 p. : fig., tab., 2007.
S. Africa. De ZA,
«Guideline for the costing of household sanitation projects». South Africa, Department of Water Affairs and Forestry, Pretoria, South Africa, p. 3, 36 p. : fig., tab., 2007.
L. D’Agnes y Margoluis, C.,
«Integrating population, health, and environment (PHE) projects: a programming manual». USAID, Washington, DC, USA, p. v, 106 p. : 5 fig., 4 tab., 2007.
J. Brown, Sobsey, M., y Proum, S.,
«Use of ceramic water filters in Cambodia : improving household drinking water quality». Water and Sanitation Program Cambodia Country Office, Phnom Penh, Cambodia, p. 44 p. : boxes, fig., map, photogr., tab., 2007.