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Biblio
Found 2 results
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ventilators
and
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is
Mara, D.D.
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1986
B. Ryan
y
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.
1983
B. A. Ryan
y
Mara, D. D.
,
«
Pit latrine ventilation : field investigation methodology
»
, vol. no. 4. World Bank, Washington, DC, USA, p. i, 16 p., 1983.
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