Description
Published:Began with 1981 issue.
Item Description:Paper version available from: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711.
Title varies slightly.
Some v. distributed to depository libraries in microfiche.
Description based on: 1983.
Description based on: 1982.
Microform.
Physical Description:volumes : illustrations, maps ; 28 cm.
Some v. also available via Internet from the EPA web site (PDF files only). Address as of 1/8/01: http://www.epa.gov/airtrends/; current access is available via PURL.
Publication Frequency:Annual
ISSN:0885-2448