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Warner, D.B., C. Abate, G. & Nairobi, K.E.Catholic R., 2005. Guidelines for the development of small-scale rural water supply and sanitation projects in East Africa : a policy and planning framework for activities funded by USAID under the Title II (Food for Peace) Program and by other donors, Nairobi, Kenya: Catholic Relief Services (CRS) East Africa Regional Office. Available at: https://fr.ircwash.org/sites/default/files/Warner-2005-Guidelines.pdf.