NCHS. Advance report of final natality statistics, 1987 . Hyattsville, Maryland: US Department of Health and Human Services, Public Health Service, 1989;. (Monthly vital statistics report; vol 38, no.
(3)
, suppl)
Ventura SJ. Trends and variations in first births to older women, 1970-86 . Vital Health Stat 1989;;21(
(47)
).
Bureau of the Census. Preliminary estimates of the population of the United States, by age, sex, and race: 1970 to 1981 . Washington, DC: US Department of Commerce, Bureau of the Census, 1982;. (Current population reports; series P-25, no.
(917)
).
Bureau of the Census. Estimates of the population of the United States, by age, sex, and race, 1980 to 1987 . Washington, DC: US Department of Commerce, Bureau of the Census, 1988;. (Current population reports; series P-25, no.
(1022)
).
Bureau of the Census. Fertility of American women: June 1987 . Washington, DC: US Department of Commerce, Bureau of the Census, 1988;. (Current population reports; series P-20, no.
(427)
).
Bureau of the Census. Educational attainment in the United States, March 1987 and 1986 . Washington, DC: US Department of Commerce, Bureau of the Census, 1988;. (Current population reports; series P-20, no.
(428)
).
Taffel S. Maternal weight gain and the outcome of pregnancy, United States, 1980 . Vital Health Stat 1986;;21(
(44)
).
Prager K, Malin H, Spiegler D, Van Natta P, Placek P. Smoking and drinking behavior before and during pregnancy of married mothers of live-born infants and stillborn infants . Public Health Rep 1984;;99:117-27.
Mosher W, Pratt W. Fecundity, infertility, and reproductive health in the United States, 1982 . Vital Health Stat 1987;;23(
(14)
).
NCHS. Advance report of final marriage statistics, 1986 . Hyattsville, Maryland: US Department of Health and Human Services, Public Health Service, 1989;. (Monthly vital statistics report; vol 38, no.
(3)
, suppl 2).