title: [The problems of sludge build-up].
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D009566:Nitrates / Q000032:analysis; D012722:Sewage; D014871:Water Microbiology
chemical_list: D009566:Nitrates; D012722:Sewage
vernacular_title: Untersuchungen über die Problematik der Blähschlammbildung.