1. End results in 400 cases of placenta previa;Adair;Am. J. Obst. & Gynec.,1938
2. End results in 400 cases of placenta previa;Aldridge;Am. J. Obst. & Gynec.,1938
3. Ballonbehandlung mit tierischen Blasen;Baumm;Deutsch, med. Wchnschr.,1913
4. Obstetrical Practice;Beck,1939
5. X-ray diagnosis of placenta previa;Beck;Am. J. Obst. & Gynec.,1938