Description
Published:Began with 1981 issue.
Item Description:Some v. distributed to depository libraries in microfiche.
Description based on: 1983.
Previously classed: edition 1.47:.
Physical Description:volumes : illustrations, maps ; 28 cm.
Some v. also available via Internet at EPA's Air Trends web site. Address as of 12/20/02: http://www.epa.gov/airtrends/reports.html; current access is available via PURL.
Publication Frequency:Annual
ISSN:0885-2448
Related Items:Summarized by: Brochure on national air quality, <1995>-1996; Latest findings on national air quality, 1997-