http://dewey.info/scheme/a14/
306 Culture and institutions
306.7 Sexual relations
306.73 General institutions 306.74 Prostitution 306.76 Sexual orientation 306.77 Sexual and related practices
http://dewey.info/scheme/edition/e23/
306 Culture and institutions
306.7 Sexual relations
306.70285 Computer sex 306.70811 Men--sexual relations 306.7082 Women--sexual relations 306.70835 Adolescents--sexual relations 306.70844 Middle-aged people--sexual relations 306.70846 Older people--sexual relations 306.70973 Sexual relations--United States 306.73 General institutions 306.74 Prostitution 306.76 Sexual orientation, transgenderism, intersexuality 306.77 Sexual and related practices
Dewey Decimal Classification
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