[The improvement of the hygienic situation in children's collectives].
D002675:Child, Preschool; D005581:Foster Home Care; D005859:Germany, East; D006306:Health Surveys; D006801:Humans; D006920:Hygiene; D007223:Infant; D012572:School Health Services; D012578:Schools, Nursery
Die Verbesserung der hygienischen Situation in den Kinderkollektiven.