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
Acute Toxicity of Aqueous and Substrate-Bound Copper to the Midge, 'Chironomus decorus'. Kosalwat, P; Knight, A. W.	PB91146324	1987	10 pages
Chronic Toxicity of Copper to a Partial Life Cycle of the Midge, 'Chironomus decorus'. Kosalwat, P; Knight, A. W.	PB91146332	1987	10 pages