TRENDS AND DETERMINANTS OF FAMILY SIZE IN THE UNITED STATES.
D005191:Family Characteristics; D005193:Family Planning Services; D005260:Female; D006306:Health Surveys; D006801:Humans; D011153:Population; D011247:Pregnancy; D014481:United States; D014798:Vital Statistics
FAMILY PLANNING; HEALTH SURVEYS; POPULATION; PREGNANCY; UNITED STATES; VITAL STATISTICS