Search Results for the EPA National Library Catalog

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Select Item	Title	Year Published
1	Arctic contamiants research program : research plan /	1992
2	Correspondence between Spatial Patterns in Fish Assemblages in Ohio Streams and Aquatic Ecoregions.	1986
3	Defining Regions for Evaluating Environmental Resources.	1989
4	Ecological Regions versus Hydrologic Units: Frameworks for Managing Water Quality.	1991
5	Ecoregions and Subregions of Iowa: A Framework for Water Quality Assessment and Management.	1994
6	Ecoregions of Alaksa.	1995
7	Ecoregions of Tennessee.	1997
8	Ecoregions of the conterminous United States /	1986
9	Ecoregions of the Upper Midwest States /	1988
10	Ecoregions: A Spatial Framework for Environmental Management.	1993
11	Improved Technique for Estimating Mean Depths of Lakes.	1983
12	Interpreting Patterns of Lake Alkalinity in the Upper Midwest Region, USA.	1987
13	Lake regions of Florida /	1997
14	Level III and IV Ecoregions of Illinois.	2006
15	Level III and IV ecoregions of Pennsylvania and the Blue Ridge Mountains, the central Appalachian Ridge and valley, and the central Appalachians of Virginia, West Virginia, and Maryland /	1996
16	Regional Lake Quality Patterns: Their Relationship to Lake Conservation and Management Decisions.	1996
17	Regional Reference Sites: A Method for Assessing Stream Potentials.	1986
18	Significance of Regional Lake Quality Patterns to Management/Restoration of Specific Lakes.	1995
19	Stream Nutrient Levels and Proximity of Agricultural and Forest Land to Streams: Some Relationships.	1981
20	Summer total phosphorus in lakes : a map of Minnesota, Wisconsin, and Michigan, USA /	1988
21	Summer total phosphorus in lakes in Minnesota, Wisconsin, and Michigan /	1988
22	The Massachusetts Ecological Regions Project /	1994
23	Total alkalinity of surface waters : New England and New York Region /	1985
24	Total Alkalinity of Surface Waters: A Map of the Western Region.	1986

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