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Filters: Keyword is gravity supply and Author is Pinnawala, S.K.  [Clear All Filters]
1986
S. K. Pinnawala y Herath, H. M. D. R., «Village water supply schemes sponsored by the Sarvodaya Rural Technical Service (an evaluation based on a field study of 10 communities)». University of Peradeniya, Dep. of Sociology, Peradeniya, Sri Lanka, p. iii, 57 p.: tab., 1986.
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