Search Results for the EPA National Library Catalog

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Performance of trickling filter plants : reliability, stability and variability / 1981
Performance of trickling filter plants : reliability, stability and variability {Microfiche} / 1981
Periphyton and phytobenthon as indicators of water quality : completion report / 1972
Periphyton and Phytobenthon as Indicators of Water Quality. 1972
Permanent wetland reserve analysis of a new approach to wetland protection / 1990
Persistence of chlorinated hydrocarbon contamination in a California marine ecosystem / 1989
Personal counseling 1993
Perturbation techniques in mathematics, physics, and engineering 1964
Pesticide assessment guidelines : subdivision O, residue chemistry / 1982
Pesticide Effects on Occupationally Exposed Workers: A Summary of Four Years Observation of Industry and Farm Volunteers in South Carolina. 1972
Pesticide testing with littoral enclosures / 1990
Pesticide, nutrient, water-discharge and physical-property data for the Mississippi River and some of its tributaries, April 1991-September 1992 / 1995
Pesticides : status of FDA's efforts to improve import monitoring and enforcement : statement of Richard L. Hembra, Director, Environmental Protection Issues, Resources, Community, and Economic Development Division, before the Subcommittee on Oversight and Investigations, Committee on Energy and Commerce, House of Representatives / 1993
Pesticides and volatile organic compounds in surface and ground water of the Palouse subunit, central Columbia Plateau, Washington and Idaho, 1993-95 1998
Pesticides in the nation's rivers, 1975-1980, and implications for future monitoring / 1985
Pesticides: their use and toxicity in relation to wildlife 1956
Petrographic and mineralogical characteristics of carbonate rocks related to sulfur dioxide sorption in flue gases 1971
Petrographic and Mineralogical Characteristics of Carbonate Rocks Related to Sulfur Dioxide Sorption in Flue Gases. 1971
Petrographic characteristics and physical properties of marls, chalks, shells, and their calcines related to desulfurization of flue gases / 1973
Petrographic Characteristics and Physical Properties of Marls, Chalks, Shells, and Their Calcines Related to Desulfurization of Flue Gases. 1973
Petroleum degradation in low temperature marine and estuarine environments / 1975
Petroleum industry in Illinois, 1967. 1968
Petroleum systems reliability analysis : a program for prevention of oil spills using an engineering approach to a study of offshore and onshore crude oil petroleum systems / 1973
Pharmacological effects of ethanol on the nervous system / 1996
Phosphate reduction and response of plankton populations in Kootenay Lake / 1976
Phosphate removal in an activated sludge facility / 1974
Phosphorus removal treatability studies at C.F.B. Borden, Petawawa, Trenton and Uplands 1973
Phosphorus removal with pickle liquor in an activated sludge plant / 1971
Photolysis of 3,4-Dichloroaniline in Natural Waters. 1981
Photolysis of 3,4-Dichloroaniline in Natural Waters. 1981
Photoreactivity of Aquatic Pollutants Sorbed on Suspended Sediments. 1979
Photoreactivity of Selected Aromatic Hydrocarbons in Water. 1979
Photosolvolysis of 3,4-Dichloroaniline in Water: Evidence for an Aryl Cation Intermediate. 1978
Photosynthetic Production in a Turbid Reservoir. 1971
Physical and Chemical Oceanographic Data Umpqua River Estuary Oregon. Part II: January 25-26, 1961. 1961
Physical and Chemical Oceanographic Data. Umpqua River Estuary Oregon. Part I: December 14-15, 1960. 1961
Physical and chemical properties of Potomac River and environs, August 1978 1980
Physical and chemical properties of Potomac River and environs, August-September 1977 1979
Physical and chemical properties of the Potomac River and environs, April-May 1978 1980
Physical and chemical properties of the Potomac River and environs, January 1978 1980
Physical geology 1974
Physical properties of western coal waste materials 1977
Physical property data on coal waste embankment materials, 1974
Physical, Chemical, and Microbiological Factors Affecting the Discharge of Water into Drain Tile. 1972
Physical-chemical treatment of a municipal wastewater using powdered carbon, no. II / 1976
Physical-chemical treatment plant design / 1973
Physical/chemical treatment of blast furnace wastewaters using mobile pilot units / 1981
Physical/chemical treatment of coke plant wastewater / 1981
Physical/Chemical Treatment of Coke Plant Wastewater. 1981
Physicochemical applications of gas chromatography 1978
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