Quality assurance guidance document 2.12 : monitoring PM₂.₅ in ambient air using designated reference or Class I equivalent methods.
- Physical Description: 1 online resource (174 unnumbered pages) : illustrations
- Publisher: RTP, NC : Air Quality Assessment Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, 2016.
|General Note:|| Title from title screen (viewed July 12, 2016).
|Bibliography, etc. Note:|| Includes bibliographical references.
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