精子战争

{{Infobox book
| name = Sperm Wars
| title_orig =
| translator =
| image =
| caption = 秋川百合翻译的《精子戦争 性行動の謎を解く》
| author = 罗宾·贝克
| illustrator =
| cover_artist =
| country = United Kingdom，於1996年由伦敦出版商第四階級出版。

参考资料
外部链接
*

• [http://www.flatrock.org.nz/topics/men/sex_best_when_you_lose_your_head.htm Sex Is Best When You Lose Your Head] - on killer sperm and testicle size