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Original Article

The declines in dizygotic twinning rates and in birth rates

Pages 81-84 | Received 21 Apr 1974, Published online: 09 Jul 2009

References

  • Allen G., Schachter J. Ease of conception in mothers of twins. Social Biology 1971; 18: 18–27
  • Elwood J.M. Changes in the twinning rate in Canada 1926–70. British Journal of Preventive and Social Medicine 1973; 27: 236–241
  • James W.H. Secular changes in dizygotic twinning rates. Journal of Biosocial Science 1972; 4: 427–434
  • James W.H. Decline in dizygotic twinning rates. New England Journal of Medicine 1973; 289: 1204–1204
  • James W.H. Secular decline in dizygotic twinning rates in Italy. Acta Geneticae Medicae et Gemellologiae 1974, In the press
  • Central Statistical Office. Social Trends 1973; 4: 78–78
  • Tietze C. Reproductive span and rate of reproduction among Hutterite women. Fertility and Sterility 1957; 8: 89–97
  • Wyshak G., White C. Fertility of twins and parents of twins. Human Biology 1969; 41: 66–82

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