[Nota 29] [<--]

Feachem, R. G. "The Role of Water Supply and Sanitation in Reducing Mortality in China, Costa Rica, Kerala State (India) and Sri Lanka". En: Halstead, S. B., J. A. Walsh y K. S. Warren (compiladores). Good Health at Low Cost. Nueva York: The Rockefeller Foundation; 1985: 191-198.

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