Biopotency A Guide To Sexual Success by Richard E. Berger, M.D. Book

Written in 1987. Great condition, some yellowing of inside of dust cover. Written by a husband and wife team, Richard and Deborah Berger.
Sexual potency is a crucial part of every man’s sense of self. And when erection doesn’t happen, it can seem like the world is caving in. With the techniques in Biopotency, at least 90 percent of all long term potency problems can be successfully reversed, and the man’s sex life restored.