Biblio

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I. Rajiv Gand IN y Calcutta, I. N. All India, «Draft report on monitoring and evaluation study in respect of rural water supply and sanitation in the State of West Bengal». All India Institute of Hygiene and Public Health, Calcutta, India, p. 74 p. : tab., 1998.

I. N. All India Calcutta, «Maintenance of hand pumps and rural sanitation : course manual». Central Public Health Engineering Research Institute, New Delhi, India, p. 41 p. : 16 fig., 1975.