Search Results for the EPA National Library Catalog

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Your Search: (SUBJECT=Ecology Great Lakes Watershed North America)

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Select Item	Title	Year Published
1	A Conceptual approach for the application of biological indicators of ecosystem quality in the Great Lakes Basin : a joint effort of the International Joint Commission and the Great Lakes Fishery Commission /	1985
2	Agricultural watershed studies, Great Lakes drainage basin, Canada : final report /	1977
3	Assessment of nutrient enrichment by use of algal-, invertebrate-, and fish-community attributes in wadeable streams in ecoregions surrounding the Great Lakes /	2011
4	State of the Great Lakes 2007 : highlights /	2007
5	State of the Great Lakes, 2009 : highlights.	2009

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