Seasonal variation of births, United States, 1933-63
Subtitle: Seasonal pattern of births in the United States for 1933-63, by color, geographic region, live-birth order, age of mother, and legitimacy status. Changes in pattern over time. International comparisons. Discussion of factors associated with seasonality of births and possible causes. Revised birth rates and fertility rates by month and color. Observed rates adjusted for seasonal variation, based on new populations and new method of seasonal adjustment
Series: Vital and health statistics. Series 21, Data from the National Vital Statistics System -- no. 9; Vital and health statistics -- no. 9
Published: 1966
Place of publication: Washington
Language: eng
Number of pages: 59
Subjects: Vital Statistics
Notes: Public Health Service publication, no. 1000-Ser. 21-no. 9