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George G. Harrap & Co., Ltd., London, 1931.

Delacroix, Journal of,

translated by Walter Pach, Covici, Friede, New York, 1937.

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Folia Clinica Orientalia,

Vol. I, Fasc. 3 and 4, 1937.

Dewan, Edmond M., “On the Possibility of a Perfect Rhythm Method of Birth Control by Periodic Light Stimulation,”

American Journal Obstetrics and Gynecology,

December 1, 1967.

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