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100   $a20110419d1972      ua             0
101 0 $aeng
135   $aurcn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aTrends in "prematurity" $eUnited States : 1950-67 /$fHelen C. Chase and Mary E. Byrnes
210  1$aRockville, Md. :$cU.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics,$d1972.
215   $a1 online resource (iv, 51 pages) $cillustrations
225 1 $aVital and health statistics. Series 3, Analytical studies ;$vnumber 15
225 1 $aDHEW publication ;$vno. (HSM) 72-1030
300   $a"January 1972."
300   $a"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."
320   $aIncludes bibliographical references (pages 30-32).
517   $aTrends in "prematurity" 
606   $aPremature infants$zUnited States$vStatistics
606   $aBirth weight$zUnited States$vStatistics
606   $aNewborn infants$zUnited States$vStatistics
606   $aPremature infants$2fast
607   $aUnited States$vStatistics, Medical
607   $aUnited States$2fast
608   $aStatistics.$2fast
608   $aStatistics$vMedical.$2fast
608   $aStatistics.$2lcgft
615  0$aPremature infants
615  0$aBirth weight
615  0$aNewborn infants
615  7$aPremature infants.
700   $aChase$b Helen C.$01399150
702   $aByrnes$b Mary E.
712 02$aNational Center for Health Statistics (U.S.),
801  0$bSXT
801  1$bSXT
801  2$bOCLCO
801  2$bOCLCF
801  2$bOCLCQ
801  2$bOCLCO
801  2$bGPO
906   $aBOOK
912   $a9910711918203321
996   $aTrends in "prematurity"$93549413
997   $aUNINA