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United States Environmental Protection Agency
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Items Found: 1156
Showing: Items 451 - 500
Your Search: (SUBJECT=Inorganic nitrates)
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National performance audit program : ambient air audits of analytical proficiency, 1982 /
National performance audit program : ambient air audits of analytical proficiency, 1983 /
National Performance Audit Program. Ambient Air Audits of Analytical Proficiency, 1981.
National Performance Audit Program: 1980 Proficiency Survey for Sulfur Dioxide, Nitrogen Dioxide, Carbon Monoxide, Sulfate, Nitrate, Lead and High Volume Flow.
National surface water survey : national stream survey, phase I--pilot survey /
Nationwide Urban Runoff Program, Fresno, California: Final Report.
Nationwide Urban Runoff Program, Kansas City Area Project: Technical Report.
Nationwide Urban Runoff Program, Lake Quinsigamond Urban Runoff Project: Report on Stormwater Measurements and Modeling - Appendices A, B, and C.
Nationwide Urban Runoff Program, Tampa, Florida: Water Quality Assessment of the Lower Hillsborough River - Final Report.
Nationwide Urban Runoff Program: The Piscataway Creek Watershed Study, Final Report.
Nest Lake, Kandiyohi County, Minnesota.
Nicasio Reservoir, Marin County, California.
Nitrate and Nitrite Volatilization by Microorganisms in Laboratory Experiments.
Nitrate Reduction in the Vicinity of Tile Drains.
Nitrate removal for small public water systems /
Nitrate removal for small public water systems /
Nitrate removal from water at the water-mud interface in wetlands /
Nitrate removal from water supplies by ion exchange /
Nitrate removal from water supplies by ion exchange : executive summary /
Nitrates in Groundwater Resulting from Manure Applications to Irrigated Croplands.
Nitrite-Accelerated Photochemical Degradation of Cellulose as a Pretreatment for Microbiological Conversion to Protein.
Nitrogen and irrigation management to reduce return-flow pollution in the Columbia Basin /
Nitrogen and phosphorus in wastewater effluents, working paper no. 22, a prelim. analysis of Nat. Eutrophication Survey data collected during the 1972-73 sampling period.
Nitrogen and phosphorus losses from agronomy plots in North Alabama,
Nitrogen in Industry.
Nitrogen Removal from Wastewaters.
North Carolina barrier islands wastewater management final environmental impact statement /
North Waubay Lake, Day County, South Dakota.
Northboro, Hudson, Maynard, and Billerica Impoundments, Worcester and Middlesex Counties, Massachusetts.
Nutrient Limitation and Adaption of Microbial Populations to Chemical Transformations.
Nutrient Management. Supplement to the Journal of Soil and Water Conservation Volume 49, Number 2.
Nutrient Regeneration by Zooplankton in Southern Lake Huron.
Nutrient Removal from Wastewater by Physical-Chemical Processes.
Nutritional Requirements of the Submerged Angio-Sperm 'Ruppia maritima' in Algae-Free Culture.
O'Shaughnessy Reservoir, Delaware County, Ohio.
O. C. Fisher (San Angelo) Reservoir, Tom Green County, Texas.
Oconomowoc Lake, Waukesha County, Wisconsin.
Okauchee Lake, Waukesha County, Wisconsin.
Old Ben Mine Reservoir, Franklin County, Illinois.
Olin Lake, LaGrange County, Indiana.
Oliver Lake, LaGrange County, Indiana.
On-Line Colorimetric Analyzers for Monitoring Nitrate-Nitrite, Ammonia, Orthophosphorus and Total Hydrolyzable Phosphorus in Wastewater-Treatment Process Streams.
One Mgd Ion Exchange Plant for Removal of Nitrate from Well Water.
Oradell Reservoir, Bergen County, New Jersey.
Otter Lake, Cayuga County, New York.
Overland recycling system for animal waste treatment /
Owasco Lake, Cayuga County, New York.
Pactola Reservoir, Pennington County, South Dakota.
Particle size distribution of nitrate aerosols in the Los Angeles air basin /
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