Mann, H.T. Williamson, D.
Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries - 3rd rev. ed. - London Intermediate Technology Publications 1982 - 96p. : ill.
090303123X
WATER SUPPLY
WATER TREATMENT
628.16:628.3 / M3
Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries - 3rd rev. ed. - London Intermediate Technology Publications 1982 - 96p. : ill.
090303123X
WATER SUPPLY
WATER TREATMENT
628.16:628.3 / M3