1. Abortion Surveillance, 1977;Center for Disease Control,1979
2. Changes in pregnancy outcome after liberalization of the New York State abortion law;Lauman;Am J Obstet Gynecol,1974
3. Liberalized abortion in Oregon: Effects on fertility, fetal death, and infant death;Quick;Am J Publ Health,1978
4. Trends in Fertility in the U.S. Rockville, MD;National Center for Health Statistics;Vital and Health Statistics Series 21,1977
5. Factors Associated with Low Birthweight, 1976;National Center of Health Statistics;Vital and Health Statistics Series 21,1980