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
Association Among Invertebrates and Habitat Indicators for Large Rivers in the Midwest. How Sampling Distance, Point-Sampling of Habitat, and Subsample Size Effect Measures of Large River Macroinvertebrate Assemblages. Flotemersch, J. E; Blocksom, K; Hutchens, J. J; Autrey, B. C.	PB2006114610	2004	50 pages