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Biblio
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Keyword
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ventilated improved pit latrines
and
Author
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National Water Supply and Drainage Board -Ratmalana, LK
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1988
L. K. National W. Ratmalana
,
Guidelines for latrine selection and construction
, vol. no. D6. Ratmalana, Sri Lanka: National Water Supply and Drainage Board, 1988, p. iv, 61 p.: fig., tab.
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