Development of a chemical toxicity assay for pulp mill effluents - Leach, J. M.; Chung, L. T. K.; United States. Environmental Protection Agency. Water Quality Office (Washington, D. C. : Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., United States Government Printing Office, 1981)
Prepared for the Environmental Protection Agency
Keywords: Water -- Purification -- Nitrogen removal; Sewage -- Purification -- Nitrogen removal; Nitrates; Oxidation-reduction reaction