What men won't tell you but women need to knowBob Berkowitz, Roger Gittines · First published 1990Open the Tome
He's Just Not Up for It AnymoreSusan Yager-Berkowitz Bob Berkowitz · First published 2008Open the Tome
Why Men Stop Having Sex Men The Phenomenon Of Sexless Relationships And What You Can Do About ItBob Berkowitz · First published 2008Open the Tome