000			00562nam a2200109Ia 4500
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040			_aAhmadu Bello University Library - Zaria
100			_aHENDERSON, Kay
245		0	_aPollution; sources of information. Proceedings of a one day conference held at the Library Association London on 27th October 1971. _cKay Henderson
260			_bLibrary Association; London. _c1972
300			_a101p.
600			_aImpurity, pollution, nuisances, offensive trades. General purification of the air. Metal and their inorganic compounds. Non-metallic elements.
999			_c1819 _d1819