http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Technical assistance document for the reporting of daily air quality
Technical assistance document for the reporting of daily air quality (2018)
Office of Air Quality Planning and Standards,
1 online resource (17 pages) : color illustrations, color maps
Includes bibliographical references (page 17).
Technical assistance document for the reporting of daily air quality (2016)
Technical assistance document for the reporting of daily air quality - the Air Quality Index (AQI)