Eckenfelder, W. Wesley Activated sludge treatment of industrial wastewater - Lancaster Technomic Pub. 1995 - xiv,281 p. ISBN: 1566763029 Subjects--Topical Terms: ENVIRONMENTAL ENGINEERINGSANITARY ENGINEERINGSEWERAGESLUDGE TREATMENTWASTEWATERWASTEWATER TREATMENT Universal Decimal Class. No.: 628.2 / ECK