City air quality trends (GEMS/Air Data).

City air quality trends (GEMS/Air Data). Vol. 2, Athens, Cairo, Caracas, Christchurch, Hong Kong, Los Angeles, Madrid, New York, Shenyang, Toronto. - Geneva : World Health Organization, 1993. - 55 p.


DC.HQ


eng.


Air pollutants.
Air pollution.
Urban health.


United States.
China.
Canada.
Egypt.
Greece.
Hong Kong.
New Zealand.
Spain.
Venezuela.

WA 754
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