Search Results for the EPA National Library Catalog

Items Found: 900
Showing: Items 201 - 250
Your Search: (SUBJECT=FRESHWATER)


 
 
 
PREV 1 2 3 4 5 6 7 8 9 10 11 12 ... 18 NEXT
Select Item Title Year Published
Die Susswasser-Flora Mitteleuropas : heft 10: Bacillariophyta (Diatomeae) / Friedrich Hustedt ; herausgegeben von Dr A. Pascher. 1930
Dissolved silica in the tidal Potomac River and Estuary, 1979-81 water years / 1988
Distribution and dispersal of freshwater animals in Africa, Pacific areas and South America 1995
Distribution of fish, benthic invertebrate, and algal communities in relation to physical and chemical conditions, Yakima River basin, Washington, 1990 1997
Distribution of freshwater fishes in Japan : Supplement to Catalog of the freshwater fish collection in the National Science Museum, Tokyo / 2000
Distribution of phytoplankton in Idaho lakes / 1979
Distribution of phytoplankton in Utah lakes / 1979
Distribution of phytoplankton in Washington lakes / 1979
Distribution of phytoplankton in West Virginia lakes / 1977
Distribution of phytoplankton in Wyoming lakes / 1979
Dividing the waters : food security, ecosystem health, and the new politics of scarcity / 1996
Dominant attached filamentous algae of Lake Huron : field ecology and biomonitoring potential 1980 / 1985
Draft Final Report from an Acute Freshwater Fish (Rainbow Trout) 96-hour Toxicity Study Using: 4,4-isopropylidene bis(2-allylphenol). 2014
Dynamic 96-hour Acute Toxicity of Acrylamide Monomer to Fathead Minnow (pimephales Promelas). 2000
Dynamics of arsenic in the aquatic environment / 1968
Ecological bases for lake and reservoir management : proceedings of the Ecological Bases for Management of Lakes and Reservoirs Symposium, held 19-22 March 1996, Leicester, United Kingdom / 1999
Ecology and classification of North American freshwater invertebrates 2001
Ecology and classification of north american freshwater invertebrates 2009
Ecology and classification of North American freshwater invertebrates / 1991
Ecology and utilization of African inland waters 1981
Ecology of bottomland hardwood swamps of the Southeast : a community profile / 1982
Ecology of fresh water / 1971
Ecology of inland waters and estuaries. 1961
Ecology of running waters 2001
Ecology of shallow lakes 1998
Ecology of the second trophic level in Lakes Superior, Michigan, and Huron 1970
Ecology of the zoobenthos of southeastern Lake Michigan near the D.C. Cook Nuclear Power Plant 1984
Ecosystem approach to the integrity of the Great Lakes in turbulent times 1990
Ecosystematic study of the fauna and flora of the Savannah River; 1967
Ecotoxicological testing of marine and freshwater ecosystems : emerging techniques, trends, and strategies / 2005
Effect of 3,4-dichloroaniline on the Growth of Rainbow Trout, Salmo Gairdneri with Cover Letter dated 103086. 2000
Effect of antimycin on instream mussel populations / 1975
Effect of hydrogen sulfide on fish and invertebrates. 1976
Effect of hydrogen sulfide on fish and invertebrates. Part I, Acute and chronic toxicity studies / 1976
Effect of hydrogen sulfide on fish and invertebrates. Part II, Hydrogen sulfide determination and relationship between pH and sulfide toxicity / 1976
Effect of irrigation pumping on desert pupfish habitats in Ash Meadows, Nye County, Nevada 1976
Effect of thermal inputs on the populations of fish and macroinvertebrates in the Wabash River 1973
Effects of 3,4-dichloroaniline on the Growth Rate of Rainbowtrout, Salmo Gairdneri with Cover Letter dated 103086. 2000
Effects of alterations to low gradient reaches of Utah streams 1980
Effects of aroclor 1254 on brook trout, Salvelinus fontinalis / 1976
Effects of biologically treated bleached kraft mill effluent on cold water stream productivity in experimental stream channels : fifth progress report. 1989
Effects of biologically treated bleached kraft mill effluent on the periphyton community in southern experimental streams for 1976 and 1977. 1984
Effects of chlorine on freshwater fish under various time and chemical conditions : toxicity of chlorine to freswater fish / 1982
Effects of Chlorpyrifos on the Diet and Growth of Larval Fathead Minnows, 'Pimephales promelas', in Littoral Enclosures. 1990
Effects of exposure to heavy metals on selected freshwater fish : toxicity of copper, cadmium, chromium and lead to eggs and fry of seven fish species / 1976
Effects of exposure to heavy metals on selected freshwater fish : toxicity of copper, cadmium, chromium and lead to eggs and fry of seven fish species / 1976
Effects of Freezing on Toxicity of Sediments Contaminated with DDT and ENDRIN. 1989
Effects of granitic sand on the distribution and abundance of salmonids in Idaho streams a master's thesis / 1975
Effects of mercury compounds on algae / 1973
Effects of oil shale leachate on phytoplankton productivity 1979
PREV 1 2 3 4 5 6 7 8 9 10 11 12 ... 18 NEXT

Save, Print or Email Selected Records