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
Source-Receptor Study of Volatile Organic Compounds and Particulate Matter in the Kanawha Valley, WV. 2. Analysis of Factors Contributing to VOC and Particle Exposures. Cohen, M. A; Ryan, P. B; Spengler, J. D; Oezkaynak, H; Hayes, C.	PB91207092	1991	15 pages
Source-Receptor Study of Volatile Organic Compounds and Particulate Matter in the Kanawha Valley, WV. 1. Methods and Descriptive Statistics. Cohen, M. A; Ryan, P. B; Spengler, J. D; Oezkaynak, H; Hayes, C.	PB91207084	1991	17 pages