National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Title/Authors	Accession Number	Publication Year	Page Count
Acid Aerosol Measurement Intercomparison Workshop. Held in Research Triangle Park, North Carolina on April 10-11, 1991. Barnes, H. M; Smolko, E.	PB92191097	1992	350 pages
Acid Aerosol Measurement Methods: A Summary of U.S. EPA Intercomparisons. Ellestad, T. G.	PB93221885	1993	8 pages
Acid Aerosol Measurement Methods: Studies of Extraction and Analytical Effects. Ellestad, T. G; Hodson, L. L; Randtke, S. J; Thurston, G. D; Koutrakis, P.	PB92191154	1992	8 pages