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United States Environmental Protection Agency
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Items Found: 1029
Showing: Items 301 - 350
Your Search: (SUBJECT=Plants Botany)
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Ecological exposure and effects of airborne toxic chemicals : an overview /
Ecological recovery after reclamation of toxic spoils left by coal surface mining : phase 1 : a baseline assessment of environmental conditions prior to application of intensive remedial treatments /
Ecology and Productivity of Strip-Mine Areas in Mercer County, Pennsylvania.
Ecology of Patterned Boreal Peatlands of Northern Minnesota: A Community Profile.
Economics of Air and Water Pollution.
Effect of Acid Gases on the Pigment Composition of the Leaves of Trees and Lawn Plants (Vliyanie Kislykh Gazov na Pigmentnyi Sostav Listev Drevesnykh i Gazonykh Rastenii).
Effect of Aerosolization on Subsequent Bacterial Survival.
Effect of an Activated Sludge Wastewater Treatment Plant on Ambient Air Densities of Aerosols Containing Bacteria and Viruses.
Effect of Cadmium on the Root and Nodule Ultrastructure of 'Alnus rubra'.
Effect of Chlorine on Stress Ethylene Production.
Effect of Nitrogen Oxides on Several Plants (Chisso Sankabutsu no Nisan Shokubutsu ni Oyobosu Eikyo).
Effects of Acidification on Stream Ecosystems.
Effects of Daily Ozone Exposure Duration and Concentration Fluctuation on Yield of Tobacco.
Effects of Extreme Floods and Placer Mining on the Basic Productivity of Sub Arctic Streams.
Effects of Ozone on Plants in the United States.
Effects of Ozone on Root Processes.
Effects of photochemical oxidants on plants /
Effects of Photochemical Reaction Substances on Plants (Kokagaku Hanno Busshitsu no Shokubutsu ni Oyobosu Eikyo).
Effects of Pollution on Freshwater Organisms.
Effects of Pollution on Freshwater Organisms.
Effects of Pollution on Freshwater Organisms. Fate and Effects of Pollutants.
Effects of Rainfall Acidification on Plant Pathogens.
Effects of Reduced Use of Lead in Gasoline on Vehicle Emissions and Photochemical Reactivity.
Effects of Sewage Sludge on Di- (2-Ethylhexyl) Phthalate Uptake by Plants.
Effects of Soil Moisture on Structural and Biomass Characteristics of Four Salt Marsh Plants.
Effects of Sulfur Oxides in the Atmosphere on Vegetation; Revised Chapter 5 for 'Air Quality Criteria for Sulfur Oxides'.
Effects of the Ratio of Hydrocarbon to Oxides of Nitrogen in Irradiated Auto Exhaust.
Effects of Toxicants on Plankton.
Effects of Ultraviolet-B Irradiance on Soybean. V. The Dependence of Plant Sensitivity on the Photosynthetic Photon Flux Density during and After Leaf Expansion.
Effects of Ultraviolet-B Irradiation on Plants during Mild Water Stress. 1. Effects on Diurnal Stomatal Resistance.
Effects of Ultraviolet-B Radiation on Plants during Mild Water Stress. Effects on Photosynthetic Recovery and Growth in Soybean.
Effects of Ultraviolet-B Radiation on Plants during Mild Water Stress. IV. The Insensitivity of Soybean Internal Water Relations to Ultraviolet-B Radiation.
Effects of Ultraviolet-B Radiation on Terrestrial Plants and Marine Organisms.
Effects of Ultraviolet-B Radiation on the Growth and Yield of Crop Plants.
Effects of UV Radiation on Plants in the Transition Region to Blue Light.
Elementary Mathematical Problem Arising in Diatom Taxonomy.
Elkins mine drainage pollution control demonstration project.
Elkins Mine Drainage Pollution Control Demonstration Project.
Emission rates for biogenic NOx
Endosulfan : ambient water quality criteria.
Endrin : ambient water quality criteria.
Energy Supply, Demand/Need and the Gaps Between. Volume II. Monograph, Working Papers and Appendix Papers.
Energy/Environment II. Proceedings of National Conference on the Interagency R and D Program (2nd) Held at Washington, D.C. on June 6 and 7, 1977.
Environmental applications of advanced instrumental analyses : assistance projects, FY 75 /
Environmental assessment of an oil-fired controlled utility boiler /
Environmental changes from long-term land applications of municipal effluents : technical report /
Environmental chemicals: Human and animal health.
Environmental effects of fluoride : Glacier National Park and vicinity /
Environmental effects of increased coal utilization : ecological effects of gaseous emissions from coal combustion /
Environmental Fate of Hexazinone.
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