College Girls: Sex Equation 1973
Nikkatsu Roman Porno
- Released: 1973-01-13
- Runtime: 69 minutes
- Genre: Comedy
- Stars: Mari Tanaka, Miyoko Aoyama, Shinko Jo, Yoshie Kitsuda, Sayori Shima, Chieko Harada, Nagatoshi Sakamoto, Maki Carrousel
- Director: Kōyū Ohara