| Ueberwindung der geschlechtsnot? by Werner Ninck-Koch - 1940 - 284 pages |
| Ueberwindung der geschlechtsnot? by Werner Ninck-Koch - 1940 - 284 pages |
| Ujāle kī talāśa by S. K. Pagāre - 2001 - 239 pages |
| Ukraïna kokhanni͡a͡ by Oleksandr Vyz͡h͡enko - 2005 - 276 pages |
| Uma sedução por semana by Betty Herbert - 2012 - 296 pages |
| Un clandestino a bordo by Dacia Maraini - 2002 - 93 pages |
| Un clandestino a bordo by Dacia Maraini - 1996 - 93 pages |
| Un clandestino a bordo by Dacia Maraini - 1996 - 93 pages |
| Un pensiero al giorno by Robin Norwood - 2003 - 380 pages |
| Un sesso invisibile by Riccardo Galiani - 2005 - 201 pages |
| Una nuova schiavitù by Oreste Benzi - 1999 - 147 pages |
| Uncertain liaisons by Khushwant Singh, Shobha Dé - 1993 - 213 pages |
| Uncertain liaisons by Khushwant Singh, Shobha Dé - 1993 - 213 pages |
| Uncharted lives by Stanley Siegel, Ed Lowe - 1994 - 244 pages |
| Unchastity sanctioned by religion and mystic fears by Mi-kee (pseud.) - 1963 - 64 pages |
| Understanding & Expressing Sexuality by Rosalyn Kramer Monat-Haller - 1992 - 250 pages |
| Understanding and Treating Sex Addiction by Paula Hall - 2012 - 216 pages |
| Understanding Asexuality by Anthony F. Bogaert - 2012 - 192 pages |
| Understanding Filipino values on sex, love and marriages by Tomas Quintin D. Andres - 1987 - 112 pages |
| Understanding Human sexual inadequacy by Fred Belliveau, Lin Richter, William H. Masters - 1970 - 334 pages |
| Understanding human sexuality by Janet Shibley Hyde, John D. DeLamater - 2006 - 668 pages |
| Understanding human sexuality by Janet Shibley Hyde, John D. DeLamater - 2000 - 705 pages |
| Understanding human sexuality by Joann S. DeLora, Carol A. B. Warren, Carol Rinkleib Ellison - 1980 - 165 pages |
| Understanding Non-Monogamies by Meg Barker - 2010 - 312 pages |
| Understanding Non-Monogamies - 2009 - 312 pages |
| Understanding our sexuality by Bryan Strong, Christine DeVault - 1988 - 566 pages |
| Understanding our sexuality by Bryan Strong, Rebecca Reynolds - 1982 - 530 pages |
| Understanding Sex and Sexuality by Nancy Hennessy Cooney - 1987 - 92 pages |
| Understanding sexual interaction by Joann S. DeLora, Carol A. B. Warren, Carol Rinkleib Ellison - 1981 - 592 pages |
| Understanding sexual interaction by Joann S. DeLora, Carol A. B. Warren - 1977 - 642 pages |
| Understanding sexuality by Kurt Haas, Adelaide Haas - 1993 - 696 pages |
| Understanding sexuality by Adelaide Haas, Kurt Haas - 1990 - 635 pages |
| Understanding sexuality by Derek Llewellyn-Jones - 1988 - 117 pages |
| Understanding Sexuality by Roy Masters, Dorothy Baker - 1988 - 361 pages |
| Understanding sexuality by Kurt Haas, Adelaide Haas - 1987 - 636 pages |
| Understanding the female orgasm by Seymour Fisher - 1973 - 266 pages |
| Understanding the female orgasm by Seymour Fisher - 1973 - 266 pages |
| Undressing Lesbian Sex by Elaine Creith - 1996 - 224 pages |
| Une Nouvelle morale sexuelle? by Hélène Pelletier-Baillargeon - 1976 - 150 pages |
| Uneasy virtue by Barbara Meil Hobson - 1987 - 275 pages |
| Unhappy marriage and divorce by Edmund Bergler - 1946 - 167 pages |
| Unkept women by Nina Kushner - 2005 - 542 pages |
| Unravelling Taboos by Suzanne LaFont, Dianne Hubbard - 2007 - 366 pages |
| Unspoken Desires by Iris Finz, Steven Finz - 2001 - 240 pages |
| Unspoken Desires by Iris Finz, Steven Finz - 2001 - 240 pages |
| Untersuchungen über die libido sexualis by Albert Moll - 1898 - 872 pages |
| Untrodden fields of anthropology by Dr. Jacobus X (pseud.) - 1937 |
| Unusual Sexual Behavior by David Lester - 1975 - 242 pages |
| Unzipped by Manon - 2012 - 212 pages |
| Uranisme et unisexualité by André Raffalovich - 1896 - 363 pages |
| Urareyuku onna by Yukiaki Uemura - 283 pages |
| Urban Tantra by Barbara Carrellas - 2007 - 304 pages |
| Urban Tantra by Barbara Carrellas - 2007 - 304 pages |
| User's Guide Complete Sexual Satisfaction by Victoria Dolby Toews - 2003 - 96 pages |