China's air quality in cities improves

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Submitted by ipsita on Tue, 1997-12-09 10:30

China's air quality in cities has become better over the past week and most cities enjoyed good air quality, according to the China Environmental Monitoring Center. The center's latest air-quality

thesaurus: 
Environment
Main Topic: 
Environment
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Clipping Type: 
DNB
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Main Type: 
dte-DNB
Publication Date: 
09/12/1997