Vital and health statistics: Series 21, Data from National Vital Statistics System. 5. Weight at birth and survival of newborn by age of mother and total-birth order, United States, early 1950, statistics derived from vital records on neonatal mortality by weight at birth, by color and sex, for infants born in United States, during 1st 3 months of 1950, by age of mother, total-birth order, and outcome of mother's previous pregnancies; [by Jeanne Loab].

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