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
Intercomparison of Atmospheric Nitric Acid Measurements at Elevated Ambient Concentrations. Anlauf, K. G; Wiebe, H. A; Tuazon, E. C; Winer, A. M; Mackay, G. I.	PB91196543	1991	9 pages
Measurement of Atmospheric Nitric Acid at Azusa by Tunable Diode Laser Absorption Spectrometry. Mackay, G. I.	PB95106696	1994	43 pages
Directory of Japanese Technical Reports, 1992-1993.	PB93114924	1993	382 pages