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- Am. J. Obstet. Gynecol. 1971; 109: 440
Borer, R. C., Jr., Gluck, L., and Kulovich, M. V.: Am. J. Obstet. Gynecol. In press.
- Non-Parametric Statistics. McGraw-Hill Book Company, Inc, New York1956 (chaps. 6 and 9) ed. 14.