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Articles 9211 - 9240 of 9277
Full-Text Articles in Earth Sciences
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Year-round field studies of the com position and ecology of stream communities associated with the purification of organic wastes in streams were initiated on Lytle Creek in October, 1949. This creek, which is located about 45 miles northeast of Cincinnati, Ohio, is a tributary of the Little Miami River. Its drainage basin comprises 27 sq. mi., a third of which is contained within the city limits of Wilmington, Ohio, a city of some 7,412 persons
Long Range Data (1955), Walter A. Lawrance
Long Range Data (1955), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Odor Report (1955), Walter A. Lawrance
Addition Of Sodium Nitrate (1955), Walter A. Lawrance
Addition Of Sodium Nitrate (1955), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Analytical Data (1955), Walter A. Lawrance
Analytical Data (1955), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Special Projects (1955), Walter A. Lawrance
Special Projects (1955), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Press Reports (1955), Walter A. Lawrance
Industrial Wastes, Charles E. Renn
Industrial Wastes, Charles E. Renn
United States Environmental Protection Agency: Publications
This paper presents a summary of experiences with a variety of cyanogenic wastes. The work has attempted to evaluate the interaction of waste bearing waters and the environment in terms of waste disposal design requirements. In this, the approach is somewhat more critical than that commonly taken by fisheries biologists, conservationists, and others who have been concerned with the "preventive" aspects of waste disposal.
The first phases of the work were designed to discover the tolerable limits of certain waste components to fresh water fish. This was undertaken in 1950; in the interval the composition of the wastes has been …
Addition Of Sodium Nitrate (1954), Walter A. Lawrance
Addition Of Sodium Nitrate (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Benthal Deposits (1954), Walter A. Lawrance
Benthal Deposits (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Odor Report (1954), Walter A. Lawrance
Press Reports (1954), Walter A. Lawrance
Analytical Data (1954), Walter A. Lawrance
Analytical Data (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Addition Of Sodium Nitrate (1953), Walter A. Lawrance
Addition Of Sodium Nitrate (1953), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Odor Report (1953), Walter A. Lawrance
Supplement To Odor Report (1953), Walter A. Lawrance
Supplement To Odor Report (1953), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Analytical Data (1953), Walter A. Lawrance
Analytical Data (1953), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Press Reports (1953), Walter A. Lawrance
Stream Pollution, Ruth Patrick
Stream Pollution, Ruth Patrick
United States Environmental Protection Agency: Publications
This paper discusses the various ways in which aquatic organisms may be of use in solving problems associated with waste disposal. Since many state and federal laws set forth that nothing may be discharged that is deleterious to aquatic life, the most expedient way to determine the effect of an effluent is to study the aquatic organisms themselves.
In every river that has not been adversely affected by pollution there is a great variety of aquatic life. These organisms do not represent a great mass of living things, but rather they are organized into an intricately balance systems, often referred …
Odor Report (1952), Walter A. Lawrance
Analytical Data(1952), Walter A. Lawrance
Analytical Data(1952), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Addition Of Sodium Nitrate (1952), Walter A. Lawrance
Addition Of Sodium Nitrate (1952), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Supplement To Odor Report (1952), Walter A. Lawrance
Supplement To Odor Report (1952), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Press Reports (1952), Walter A. Lawrance
Odor Report (1951), Walter A. Lawrance
Supplement To Odor Report (1951), Walter A. Lawrance
Supplement To Odor Report (1951), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Addition Of Sodium Nitrate (1951), Walter A. Lawrance
Addition Of Sodium Nitrate (1951), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Press Reports (1951), Walter A. Lawrance
Analytical Data (1951), Walter A. Lawrance
Analytical Data (1951), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Lagoon Data (1950), Walter A. Lawrance