1. A comparison of saline and prostaglandin abortions at the Medical Center of Central Georgia;Harrison;J. Med. Assoc. Ga,1976
2. Techniques of second-trimester abortions;Kawada;Clin. Obstet. Gynecol,1977
3. Abortion surveillance;Center for Disease Control,1974
4. Abortion surveillance;Center for Disease Control,1975
5. Abortion surveillance;Center for Disease Control,1976