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Case-study of Pesticide-related Fish-kills in Alabama

Published online by Cambridge University Press:  24 August 2009

Roy P. Clark
Roy P. Clark
Affiliation:
Pesticides Branch, U.S. Environmental Protection Agency Region IV, 1421 Peachtree Street, NE, Atlanta, Georgia 30309, U.S.A.
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Abstract

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Type
Short Communications: Reports, Comments, News, Notes
Information
Environmental Conservation , Volume 1 , Issue 4 , Winter 1974 , pp. 309
Copyright
Copyright © Foundation for Environmental Conservation 1974

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References

* LD50—median lethal dose, is the milligrams of toxicant per kilogram of body weight that is lethal to 50% of the test animals to which it is administered under the conditions of the experiment.

† EC50—median effective concentration, is the concentration (ppm or ppb) of a toxicant in the environment (usually water) which produces a designated effect in 50% of the test organisms exposed.