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Search Results for the EPA National Library Catalog
Items Found: 5697
Showing: Items 101 - 150
Your Search: (SUBJECT=Concentration)
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Title
Year Published
101
A study of indoor air quality /
1974
102
A study of industrial data on candidate chemicals for testing : Research report no. 1 /
1977
103
A study of new catalytic agents to determine chemical oxygen demand /
1977
104
A study of radon and airborne particulates at phosphogypsum stacks in central Florida /
1988
105
A study of winter air pollutants at Fairbanks, Alaska /
1979
106
A summary of oil shale activities at the National Bureau of Standards, 1975-1979 /
1980
107
A summary of the 1985 EPA national performance audit program on source measurements /
1987
108
A summary of the 1986 EPA national performance audit program on source measurements /
1988
109
A summary of the interlaboratory source performance surveys for EPA Reference Methods 5, 6 and 7, 1978 /
1980
110
A summary of the interlaboratory source performance surveys for EPA Reference Methods 6 and 7, 1977 /
1979
111
A surrogate species chemical reaction mechanism for urban-scale air quality simulation models /
1987
112
A survey of air and population lead levels in selected American communities : final report /
1972
113
A survey of pathogen survival during municipal solid waste and manure treatment processes /
1980
114
A survey on research needs on personal samplers for toxic organic compounds /
1980
115
A time-dependent, two-dimensional model for predicting the distribution of drilling muds discharged to shallow water /
1984
116
A Toxicity evaluation of lower Fox River water and sediments /
1986
117
A user's guide for WASTOX, a framework for modeling the fate of toxic chemicals in aquatic environments /
1984
118
A washability and analytical evaluation of potential pollution from trace elements in coal : prepared for Environmental Protection Agency, Office of Research and Development /
1978
119
Abiological methylation of mercury in soil /
1977
120
Abiological Methylation of Mercury in Soil.
1977
121
Abiotic Processes in the Degradation of Pesticides in Natural Waters.
1986
122
Abiotic Transformations in Water, Sediments, and Soil. Chapter 5.
1990
123
Abundance of trace and minor elements in organic and mineral fractions of coal /
1980
124
Accelerated decay of non-fuel evaporative emissions : task no. 1 /
1976
125
Acclimation of Aquatic Microbial Communities to Hg(II) and CH3Hg(+) in Polluted Freshwater Ponds.
1991
126
Accumulation and Depuration of No. 2 Fuel Oil by the Soft Shell Clam, 'Mya arenaria L.'
1976
127
Accumulation Factors for Eleven Polychlorinated Biphenyl Congeners.
1990
128
Accumulation of atmospheric sulfur by plants and sulfur-supplying capacity of soils /
1979
129
Accumulation of Cadmium by the American Oyster, 'Crassostrea virginica'.
1976
130
Accumulation of Cesium-137 and Strontium-90 in Ponderosa Pine and Monterey Pine Seedlings.
1993
131
Accumulation of PCBs (Polychlorinated Biphenyls), Mercury and Cadmium by 'Nereis virens', 'Mercenaria mercenaria', and Palaemonetes pugio' from Contaminated Harbor Sediments.
1983
132
Accumulation of Polychlorinated Organic Contaminants from Sediment by Three Benthic Marine Species.
1993
133
Accumulation of Polycylic Aromatic Hydrocarbons in Crankcase Oil.
1988
134
Accumulation of tritium in various species of fish reared in tritiated water. /
1974
135
Accumulation, Fractionation and Release of Oil by the Intertidal Clam 'Macoma balthica'.
1980
136
Accuracy and reliability of CEMS Subpart Da (electric utilities) facilities
1990
137
Accuracy and Trace Organic Analyses.
1976
138
Accuracy of remotely sensed SO2 mass emission rates /
1979
139
Acenaphthene : ambient water quality criteria.
1978
140
Acephate, aldicarb, carbophenothion, DEF, EPN, ethoprop, methyl parathion, and phorate: their acute and chronic toxicity, bioconcentration potential, and persistence as related to marine environments /
1981
141
Acid Precipitation and Its Effects on Terrestrial and Aquatic Ecosystems.
1980
142
Acid precipitation in North America : 1987 annual and seasonal data summaries from acid deposition system data base /
1989
143
Acid precipitation patterns and trends in eastern North America, 1980-1984 /
1987
144
Acidic Deposition and Aquatic Ecosystems: Regional Case Studies.
1990
145
Acidic Deposition Phenomenon and Its Effects: Critical Assessment Review Papers. Volume 1. Atmospheric Sciences (Review Draft).
1983
146
Acidic Deposition Phenomenon and Its Effects: Critical Assessment Review Papers. Volume 2.
1984
147
Acidic Deposition Phenomenon and Its Effects: Critical Assessment Review Papers. Volume 2. Effects Sciences (Review Draft).
1983
148
Acidic Gases and Aerosols in the Eastern and Western United States.
1992
149
Acidification of aquatic and terrestrial systems : chemical weathering /
1984
150
Acidification of Rain by the Oxidation of Dissolved SO2 and the Absorption of HNO3.
1984
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