TY  - BOOK
AU  - Chase,Helen C.
AU  - Byrnes,Mary E.
ED  - National Center for Health Statistics (U.S.),
TI  - Trends in "prematurity": United States : 1950-67  
T2  - Vital and health statistics. Series 3, Analytical studies
PY  - 1972///
CY  - Rockville, Md.
PB  - U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics
KW  - Premature infants
KW  - United States
KW  - Statistics
KW  - Birth weight
KW  - Newborn infants
KW  - fast
KW  - Statistics, Medical
KW  - Medical
KW  - lcgft
N1  - "January 1972."; "An analysis of the trend in live births registered in the United States, 1950-67 by weight at birth and period of gestation, including an assessment of the quality of the data. Other factors, such as age of mother, plurality, sex, and delivery in hospitals are included insofar as they have a bearing on the trends."; CRDP Program record; Includes bibliographical references (pages 30-32)
UR  - https://purl.fdlp.gov/GPO/gpo117210
ER  -