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
Acute and Chronic Effects of Water Quality Criteria-Based Metal Mixtures on Three Aquatic Species (Journal Version). Spehar, R. L; Fiandt, J. T.	PB87175949	1986	16 pages
Acute and Chronic Effects of Water Quality Criteria Based Metal Mixtures on Three Aquatic Species. Spehar, R. L; Fiandt, J. T.	PB86122579	1985	58 pages
Great Lakes Water Quality Initiative Criteria Documents for the Protection of Aquatic Life in Ambient Water.	PB93154656	1993	126 pages