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Bureau of Indian Standards -New Delhi, IN

IN, I.Rajiv Gand & Delhi, I.N.Bureau of, 1990. List of Indian standards and subjects under standardization (as on 31 Dec 1989, New Delhi, India: Bureau of Indian Standards. Available at: https://www.ircwash.org/sites/default/files/201-90LI-8102.pdf.

Published on: 29/12/2004

Delhi, I.N.Bureau of, 1990. General requirements for slow sand filters : Indian standard : part 2 design, construction, operation and maintenance, New Delhi, India: Bureau of Indian Standards. Available at: https://www.ircwash.org/sites/default/files/255.1-90GE-8929.pdf.

Published on: 29/12/2004

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