Abortion in the United States, 1978-1979.
D000029:Abortion, Legal / Q000191:economics / Q000639:trends*; D000293:Adolescent; D000328:Adult; D000554:Ambulatory Care Facilities; D005260:Female; D006297:Health Services Accessibility; D006306:Health Surveys; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D008484:Medicaid / Q000191:economics; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D014481:United States