1. Stubblefield, P. G. Midtrimester abortion by curettage procedures: An overview. In Hodgson, J. E., ed., Abortion and Sterilization: Medical and Social Aspects, p. 277. Academic Press, London, 1981.
2. Hern, W. M. Abortion Practice. J. B. Lippincott Co., Philadelphia, 1984.
3. Hern, W. M. Serial multiple laminaria and adjunctive urea in late outpatient dilatation and evacuation abortion. Obstet. Gynecol. 63:543, 1984.
4. Hern, W. M. Correlation of fetal age and measurements between 10 and 26 weeks of gestation. Obstet. Gynecol. 63:26, 1984.