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	Download
Mouse Skin Tumorigenicity Studies of Indoor Coal and Wood Combustion Emissions from Homes of Residents in Xuan Wei, China with High Lung Cancer Mortality. Mumford, J. L; Helmes, C. T; Lee, X; Seidenberg, J; Nesnow, S.	PB90217506	1990	9 pages