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
Microenvironmental Factors Related to Californians' Potential Exposure to Environmental Tobacco Smoke (ETS). Robinson, J. P; Switzer, P; Ott, W.	PB94214814	1994	64 pages
EPA Publications Bibliography: Quarterly Abstract Bulletin. October-December 1994.	PB94904204	1994	412 pages
Fourth External Review Draft of Air Quality Criteria for Particulate Matter (June 2003). Volume 1.	PB2003106438	2003	926 pages