Author:
Lehfeldt Hans,Gorstein Fred
Reference15 articles.
1. Gräfenberg E. Third Congress of the World League for Sexual Reform. 1929, p. 116.
2. Tietze, C. Cooperative Statistical Program for the Evaluation of Intra-Uterine Devices, Eighth Progress Report. New York: The Population Council, June 1967.
3. Tietze C. Am J Obstet Gynecol 1966;96:1043.
4. Erhardt CL, Jacobziner H. Am J Public Health 1956;46:828.
5. Spiegelberg O. Arch Gynäk 1878;13:73.