00699naa#a2200241#i#450# EN\INFRA-M\bibl\3705 20240909211219.1 1998-071X 20141025b2014####ek#y0engy0150####ca RUS RU Evolution of Floatation Equipment for Sewage Treatment аnd Active Sludge Thickening Journal article Moscow INFRA-M Academic Publishing LLC. 2014 15 с. Journal article local Senik E. Ivanov M. Vinogradov M. Taranov R. Kozodaev A. Ksenofontov Boris Semenovich Voropaeva A. naukaru.ru