"EPA 830-R-57-001." "1957." Cover title. Issued also as Biological problems in water pollution [Papers]. Seminar on Biological Problems in Water Pollution (TD420.S4 1962). Includes bibliographical references.

List of those in attendance -- Picture of group -- Use and value of bio-assays. Derivation of the threshold value for toxicity and the equation of the curve by a graphical method / George Burdick ; Interim plan for standardizing the bioassay of paralytic shellfish poison by use of a reference standard / Public Health Service ; Application factors to be applied to bioassays for the safe disposal of toxic wastes / Croswell Henderson -- Use and value of biological indicators of pollution. Some problems in the identification of microorganisms / William Bridge Cooke ; Use and value of bacterial indicators of pollution/ Paul Kabler ; Protozoa as indicators of the ecological condition of a body of water / James B. Lackey ; Algae as biological indicators of pollution / C. Mervin Palmer ; Diatoms as indicators of changes in environmental conditions / Ruth Patrick -- Use and value of fungi as biological indicators of pollution / William Bridge Cooke ; Use and value of biological indicators of pollution : fresh water clams and snails / William Marcus Ingram ; The use and value of aquatic insects as indicators of organic enrichment / Arden R. Gaufin ; Biological indices of water pollution, with special reference to fish populations / Peter Doudoroff and Charles E. Warren ; Biological criteria for the determination of lake pollution / Eugene W. Surber ; The use and abuse of indicator organisms / William M. Beck, Jr. -- Current investigations in water pollution biology. Current water pollution investigations and problems in Wisconsin / Kenneth M. Mackenthun ; Investigations and problems in Ontario / John H. Neil ; Report on pollution studies conducted in Western Canada / Michael Waldichuk ; The relationship of the polychaetous Annelid Capitella capitata (Fabricius) to waste discharges of biological origin / Donald J. Reish ; Cooperative research at Oregon State College in the biological aspects of water pollution / Charles E. Warren and Peter Doudoroff ; Some aspects of water pollution in the Missouri Basin / Joe K. Neel ; Investigations and problems in Ohio / John N. Reis ; Biology and water pollution in Great Britain / Thomas Beak -- The training of aquatic sanitary biologists. The training of aquatic sanitary biologists / Curtis L. Newcombe ; The training of aquatic sanitary biologists -- a letter / Charles E. Renn -- Water quality criteria for aquatic life. Effects of turbidity and silt on aquatic life / John N. Wilson ; The effect of pollution upon wildlife / O. Lloyd Meehean ; Water quality criteria for aquatic life / Clarence M. Tarzwell.