title: [The significance of certain protozoa in waste-water cleansing with the activated sludge method].
mesh_terms: D056890:Eukaryota; D012722:Sewage / Q000382:microbiology*; D062065:Wastewater
chemical_list: D012722:Sewage; D062065:Wastewater
keywords: PROTOZOA; SEWAGE/microbiology