[THE FREQUENCY AND DURATION OF BREAST FEEDING. COMPARISON OF POLISH AND OTHER DATA].
D001699:Biometry; D001942:Breast Feeding; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011044:Poland; D013223:Statistics as Topic
BREAST FEEDING; INFANT; INFANT, NEWBORN; POLAND; STATISTICS
CZ ESTO'S'C I CZAS TRWANIA KARMIENIA PIERSI A NIEMOWL AT. POR'OWNANIE DANYCH POLSKICH I OBCYCH.