Search Results for the EPA National Library Catalog

Items Found: 5

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


Select Item Title Year Published
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
Agricultural watershed studies, Great Lakes drainage basin, Canada : final report / 1977
Assessment of nutrient enrichment by use of algal-, invertebrate-, and fish-community attributes in wadeable streams in ecoregions surrounding the Great Lakes / 2011
State of the Great Lakes 2007 : highlights / 2007
State of the Great Lakes, 2009 : highlights. 2009

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