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1دورية
المصدر: Obstetrical and Gynecological Survey; June 1991, Vol. 46 Issue: 6 p351-353, 3p
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2دورية
المؤلفون: JOHNSTONE, FRANK D., NASRAT, AMR A., PRESCOTT, ROBIN J.
المصدر: Obstetrical and Gynecological Survey; July 1991, Vol. 46 Issue: 7 p440-441, 2p
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3دورية
المؤلفون: Simpson, Wendy M., Johnstone, Frank D., Boyd, Fiona M., Goldberg, David J., Hart, Graham J., Prescott, Robin J.
المصدر: Obstetrical and Gynecological Survey; September 1998, Vol. 53 Issue: 9
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4دورية
المؤلفون: Ross, Amanda, Raab, Gillian M., Mok, Jacqueline, Gilkison, Sara, Hamilton, Barbara, Johnstone, Frank D.
المصدر: Obstetrical and Gynecological Survey; July 1996, Vol. 51 Issue: 7