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3
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Evaluation guidelines for training in water and sanitation / prep. by Lee Jennings, Steven D. Joyce, Richard Middleton.
- Water and sanitation for health project,
- 1991.
- Arlington, VA :
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Constraints in providing water and sanitation services to the urban poor / by Tova Maria Solo, Eduardo Perez and Steven Joyce.
- Water and sanitation for health project,
- 1993.
- Arlington, VA :
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Health Benefits From Improvements In Water Supply And Sanitation : Survey And Analysis Of The Literature On Selected Diseases / Steven A.Esrey, James B.Potash and Leslie Roberts.
- Water and sanitation for health project,
- 1990.
- Washington, DC :