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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-05-07 and was most recently seen on 2026-05-07.
The Encyclopaedia of Sexual Knowledge, under the editorship of Dr. Norman Haire (1892–1952), is the first of a trilogy of sexual encyclopaedias by Arthur Koestler writing under the pen name of ‘Dr. A. Costler’. It is the English version, published by Koestler's cousin Francis Aldor in 1934, of the book L'encyclopédie de la vie sexuelle that Koestler in 1933 wrote, together with "A. Willy" and the German Dr. Ludwig Levy-Lenz. The second book is Sexual Anomalies and Perversions, Physical and Psychological Development, Diagnoses and Treatment. The title of the third book is, in the original French edition of 1939, L'Encyclopédie de la famille. This third book was subsequently translated into English and published under various titles and with changes to the structure and text of the original edition. The name of ‘Dr. Costler’ as the author or co-author of the book is omitted from later editions.The first book contained chapters by two other authors; the second I wrote alone; the third contained chapters by Manès Sperber.
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