[EFFECT OF AGE AND DURATION OF THE STAY ON MORBIDITY IN CRECHES].
D002648:Child; D002669:Child Welfare; D003604:Czechoslovakia; D006801:Humans; D007223:Infant; D009017:Morbidity; D011315:Preventive Medicine
CHILD; CHILD WELFARE; CZECHOSLOVAKIA; INFANT; MORBIDITY; PREVENTIVE MEDICINE
VLIV V EKU A D'ELKY POBYTU NA NEMOCNOST V JESL'ICH.