[Rationalization of hygienic supervision of the central water supply plants].
D005843:Geography; D005859:Germany, East; D006801:Humans; D012621:Seasons; D014871:Water Microbiology; D014881:Water Supply / Q000592:standards*
Untersuchungen zur Rationalisierung der hygienischen Uberwachung zentraler Wasserversorgungsanlagen