||Air Quality Data-1968 Annual Statistics.
||Environmental Protection Agency, Research Triangle Park, N.C. Monitoring and Data Analysis Div.
Air pollution ;
Statistical data ;
States(United States) ;
Sulfur oxides ;
Sulfur dioxide ;
Carbon monoxide ;
Nitrogen dioxide ;
Air quality data
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
This report is a statistical summary report on ambient air quality. The air quality statistics shown in this publication are produced directly from computer reports generated by EPA's on-line computer system. The data in this publication are being republished in the new revised format currently being used. Some of the data in this publication have been revised as a result of a recent effort to improve the quality of the past data.