Search Results for the EPA National Library Catalog

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Your Search: (AUTHOR=Hansen AND Stephen AND R)

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Select Item	Title	Year Published
1	Ability of Standard Toxicity Tests to Predict the Effects of the Insecticide Diflubenzuron on Laboratory Stream Communities.	1982
2	Effects of Diflubenzuron on a Complex Laboratory Stream Community.	1981
3	Generalized methodology for conducting industrial toxicity reduction evaluations (TREs) /	1989
4	Screening for Toxic Effects on Interspecies Interactions: A Mechanistic or an Empirical Approach.	1981

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