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4
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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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Technical assistance to the African development bank : development of guidelines for project preparation and appraisal in water supply and sanitation / prep. by John B. Tomaro, Richard E. Wall.
- Water and sanitation for health project (WASH),
- 1991.
- Arlington, VA :
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Guidelines for improving wastewater and solid waste management / by Richard N. Andrews...[et al.].
- Water and sanitation for health project,
- 1993.
- Arlington, VA :
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Understanding biogas generation / by Richard Mattocks.
- Volunteers in technical assistance (VITA),
- cop. 1984.
- Arlington, VA :