1. Hospital Infections;Bennett,1979
2. Birthing centers;Dechairo;Hosp. Infect. Control,1978
3. Maternity Nursing;Fitzpatrick,1971
4. A Treatise on the Epidemic Puerperal Fever of Aberdeen;Gordon,1795
5. Vaginal examination during late pregnancy and labor;Gunther;Obstet. Gynecol.,1964