Leach, J. M. <br/><br/>
Development of a chemical toxicity assay for pulp mill effluents / 
J. M. Leach and L. T. K. Chung 
 - Washington, D. C. :  Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., United States Government Printing Office,  1981 
 - 5 p. :  ill. ;  28 cm. 
 - Water pollution control research series .
<br/><br/> Prepared for the Environmental Protection Agency 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification--Nitrogen removal<br/>Sewage--Purification--Nitrogen removal<br/>Nitrates<br/>Oxidation-reduction reaction
<br/><br/><label>Dewey Class. No.: </label>553.64097887