01021oam 2200265z- 450 991100664410332120031117102526.01-5231-0286-1(CKB)3710000000888773(EXLCZ)99371000000088877320181008c2002uuuu -u- -engActivated sludge /prepared by Activated Sludge Task Force of the Water Environment Federation under the direction of the Municipal Subcommittee of the Technical Practice CommitteeWEF1-57278-173-4 Activated Sludge - WEF Manual of Practice No. OM-9 SewagePurificationActivated sludge processHandbooks, manuals, etcSewagePurificationActivated sludge process628.3/54Water Environment Federation.Activated Sludge Task Force.Water Environment Federation.Municipal Subcommittee.BOOK9911006644103321Activated sludge4046924UNINA