Project Sigma : socio-sexual investigations of gay men and AIDS : aims and methods : a thre year study of male gay and bisexual lifestyles.
- Date:
- [between 1985 and 1990?]
Licence: In copyright
Credit: Project Sigma : socio-sexual investigations of gay men and AIDS : aims and methods : a thre year study of male gay and bisexual lifestyles. Source: Wellcome Collection.
