00983nam 2200253z- 450 991100695140332120170919214028.01-5231-0302-7(CKB)3710000000752155(EXLCZ)99371000000075215520160725c2004uuuu -u- -engOperation of extended aeration package plants /prepared by Operation of Extended Aeration Package Plants Task Force of the Water Environment FederationWEF1-57278-191-2 Operation of Extended Aeration Package Plants - WEF Manual of Practice No. OM-7 Aerated package treatment systemsHandbooks, manuals, etcAerated package treatment systems628.3/54Water Environment Federation.Operation of Extended Aeration Package Plants Task Force.BOOK9911006951403321Operation of extended aeration package plants4388899UNINA