title: The ecology and role of protozoa in aerobic sewage treatment processes.
mesh_terms: D000332:Aerobiosis; D000656:Amoeba / Q000502:physiology; D000818:Animals; D018407:Bacterial Physiological Phenomena; D016798:Ciliophora / Q000502:physiology; D004463:Ecology; D056890:Eukaryota / Q000502:physiology*; D005374:Filtration; D008433:Mathematics; D008954:Models, Biological; D012722:Sewage
chemical_list: D012722:Sewage