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Biblio

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Filters: Keyword is ventilated improved pit latrines and Author is Ryan, B.  [Clear All Filters]
1986
B. Ryan and Mara, D. D., La ventilation des latrines a fosse : methodologie d'enquete sur le terrain, vol. no. 4. Washington, DC, USA: World Bank, Technology Advisory Group, 1986, p. v, 17 p. : tab., photogr.
D. D. Mara and Ryan, B., Le cabinet d'aisances ameliore a fosse ventilee : les principes techniques des tuyaux d'aeration, vol. no. 6. World Bank, Washington, DC, USA, p. v, 18 p.: fig., tab., 1986.
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