[HYGIENE OF THE VILLAGE].
D003141:Communicable Diseases; D005858:Germany; D005859:Germany, East; D006506:Hepatitis A; D006801:Humans; D006920:Hygiene; D012423:Rural Health; D012480:Salmonella Infections; D014871:Water Microbiology
GERMANY, EAST; HEPATITIS, INFECTIOUS; RURAL HEALTH; SALMONELLA INFECTIONS; WATER MICROBIOLOGY
HYGIENE DES DORFES.