Research and commentaries on Richard von Krafft-Ebing and Karl Heinrich Ulrichs.
Kennedy
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Center for Research and Education in Sexuality, San Francisco State University, USA.
D015709:Correspondence as Topic / Q000266:history; D005858:Germany; D049672:History, 19th Century; D018451:Homosexuality, Male / Q000266:history*; D006801:Humans; D008297:Male; D011570:Psychiatry / Q000266:history