1. Toxicity of copper to activated sludge;Ayres,1965
2. Summary report on the effects of heavy metals on the biological treatment processes;Barth;J. Wat. Pollut. Control Fed.,1965
3. B.O.D. progression in soluble substrates III—short-term B.O.D. and bio-oxidation solids production;Busch,1960
4. Components of the sludge loading ratio and their effect on the bulking of activated sludge;Genetelli,1964
5. Metabolic response of activated sludge to sodium pentachlorophenol;Heidman,1967