title: Bacteriology of activated sludge, in particular the filamentous bacteria.
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification; D001431:Bacteriological Techniques; D005417:Flavobacterium / Q000145:classification / Q000166:cytology / Q000302:isolation & purification; D006088:Gram-Negative Aerobic Bacteria / Q000145:classification / Q000166:cytology / Q000302:isolation & purification; D008858:Microscopy, Phase-Contrast; D012722:Sewage; D014871:Water Microbiology
chemical_list: D012722:Sewage