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机译:Effectiveness of ammonia removal by recirculating sand filters
SE Missouri State Univ, Grad Studies, Cape Girardeau, MO 63701 USA;
SE Missouri State Univ, Decis Sci, Cape Girardeau, MO 63701 USA;
Missouri Dept Nat Resources, Poplar Bluff, MO USA;
municipal public service engineering; sewage treatment disposal; water supply;