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
DC.HQ
eng.
Air pollutants.
Air pollution.
Urban health.
United States.
China.
Canada.
Egypt.
Greece.
Hong Kong.
New Zealand.
Spain.
Venezuela.
WA 754