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Air quality in selected urban areas 1977-1978: Global environmental monitoring system

Air quality in selected urban areas 1977-1978: Global environmental monitoring system / Prepared in cooperation with the WHO collaborating.............................Washington, DC, USA - Geneva: World Health Organization, 1980 - 71p. - WHO offset publication no. 57 .

504.064(203)(1-21)"1977/1978" / M0