Not All Intercourse Variations Are Created Equal
Andersson, M. (1994). Sexual choice (Vol. 72). Princeton College Press. Birkhead, T. R., & Moller, A. P. (1930). Sperm competitors...
Differences
Andersson, M. (1994). Sexual choice (Vol. 72). Princeton College Press. Birkhead, T. R., & Moller, A. P. (1930). Sperm competitors...
