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Search Results for the EPA National Library Catalog
Items Found: 860
Showing: Items 251 - 300
Your Search: (SUBJECT=Variations)
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Year Published
251
Effects of Anthropogenic Hydrocarbon Emission Reductions in Urban Areas with High Biogenic Hydrocarbon Emission Rates: Tampa and St. Petersburg Case Study. LAA Report No. P137-1.
1990
252
Effects of Chemical Variations in Aquatic Environments. Volume I. Biota and Chemistry of Piceance Creek
1973
253
Effects of Different Mixing Schedules on Phytoplankton, Zooplankton and Nutrients in Marine Microcosms.
1981
254
Effects of Experimental Acidification in Macroinvertebrate Drift Diversity in a Mountain Stream.
1982
255
Effects of fluvial tailings deposits on soils and surface- and ground-water quality, and implications for remediation--upper Arkansas River, Colorado, 1992-96 {MICROFICHE} /
2000
256
Effects of Gridded Precipitation Bias on Wet Deposition Predictions.
1986
257
Effects of humic substances on metal speciation /
1989
258
Effects of Impoundments on Water Quality in the Southwest. Discussion - Bacterial Cycles and Water Quality.
1969
259
Effects of Long-Term Ozone Exposure and Soil Moisture Deficit on Growth of a Ladino Clover-Tall Fescue Pasture.
1988
260
Effects of nutrient enrichment, light intensity, and temperature on growth of phytoplankton from Lake Huron /
1979
261
Effects of Ozone on the Regrowth and Energy Reserves of a Ladino Clover-Tall Fescue Pasture.
1988
262
Effects of Physical Gradients on the Production Dynamics of Sediment-Associated Algae.
1983
263
Effects of pond characteristics on biotic exposures /
1991
264
Effects of Repeated Ammonium Sulfate Applications on Soil Leachate Chemistry on the Fernow Experimental Forest in West Virginia, USA.
1992
265
Effects of Season and Substrate on Availability of Drift for Fish in a Small Warmwater Stream.
1985
266
Effects of sewage sludge on the cadmium and zinc content of crops /
1981
267
Effects of Simulated Acidic Rain Applied Alone and in Combination with Ambient Rain on Growth and Yield of Field-Grown Snap Bean.
1984
268
Effects of Temperature, Ration, and Size on the Growth of Juvenile Steelhead Trout, Salmo Gairdneri.
1973
269
Effects of thermal discharge on aquatic insects in the Tennessee Valley /
1978
270
Effects of thermal pollution on pelagic larvae of crustacea /
1980
271
Effects of Ultraviolet-B Radiation on Loblolly Pine. 1. Growth, Photosynthesis and Pigment Production in Greenhouse-Grown Seedlings.
1989
272
Effects of Vertical Resolution of a Regional Photochemical Model on the Diurnal Ozone Concentrations in the Planetary Boundary Layer.
1995
273
Effects of Water Management Practices on the Movement of Largemouth Bass.
1973
274
Efficacy of Ozone Exposure Indices in the Standard Setting Process.
1990
275
Effluent Ammonia Variability from Nitrification Facilities.
1984
276
Effluent Variability in the Meat-Packing and Poultry Processing Industries.
1975
277
El Paso Metropolitan Area Air Pollutant Emission Inventory.
1970
278
Environmental Assessment of an Active Oil Field in the Northwestern Gulf of Mexico, 1977-1978. Volume II. Data Management and Biological Investigations.
1979
279
Environmental Assessment of Buccaneer Gas and Oil Field in the Northwestern Gulf of Mexico, 1978-1979. Volume VIII. Trace Metals.
1980
280
Environmental effects of Western coal combustion.
1978
281
Environmental effects of Western coal surface mining : part II, the aquatic macroinvertebrates of Trout Creek, Colorado /
1978
282
Environmental Factors Influencing Methanogenesis in a Shallow Anoxic Aquifer: A Field and Laboratory Study.
1990
283
Environmental Improvements in Lake Erie during the Past Decade.
1982
284
Environmental investments : the cost of a clean environment : report of the Administrator of the Environmental Protection Agency to the Congress of the United States /
1990
285
Environmental Measurements: Valid Data and Logical Interpretation; Symposium.
1964
286
Environmental monitoring and assessment program : ecological indicators /
1990
287
Environmental Noise Monitoring at Three Sites in Irving, Texas, November-December, 1974.
1975
288
Environmental requirements and pollution tolerance of common freshwater chironoidae /
1977
289
Environmental requirements and pollution tolerance of freshwater diatoms /
1974
290
Environmental Survey of the Lower Clearwater River.
1970
291
Environmental technology verification report : field portable x-ray fluorescence analyzer : HNU systems SEFA-P.
1998
292
Environmental technology verification report : field portable x-ray fluorescence analyzer : Metorex X-MET 920-MP.
1998
293
Environmental technology verification report : field portable x-ray fluorescence analyzer : Metorex X-MET 920-P and 940.
1998
294
Environmental technology verification report : field portable x-ray fluorescence analyzer : Scitec MAP spectrum analyzer.
1998
295
Environmental technology verification report : field portable x-ray fluorescence analyzer, HNU Systems SEFA-P.
1998
296
Equalization of Wastewater Flows.
1972
297
Estimating Cloud Parameters for NEROS I.
1982
298
Estimating the Reliability of Advanced Waste Treatment.
1976
299
Estimation of seasonal and annual acidic deposition through aggregation of three-day episodic periods /
1990
300
Estuarine Ecosystems and High Temperatures.
1972
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