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Biblio
Found 2 results
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pipe materials
and
Author
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Mara, D.D.
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1986
D. D. Mara
y
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.
1983
B. A. Ryan
y
Mara, D. D.
,
«
Ventilated improved pit latrines : vent pipe design guidelines
»
. World Bank, Washington, DC, USA, 1983.
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