Chemical and biological methods of water and air pollution control : a practical hygiene manual

Purohit, S.K.

Chemical and biological methods of water and air pollution control : a practical hygiene manual - - Bikaner : Agro Botanical Pub., 1985 1985 - 59 p. 19 cm - .

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Air-Pollution
Air-Purification-Biological treatment
Water-Purification-Chemical treatment
Water-Pollution
Water-Purification-Biologicaltreatment
Air-Purification-Chemical treatment

628.54:628.34 Pur

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