This classic sex booklet, THE KEY TO LOVE AND SEX is Volume 2 of an 8-vol. series. This one deals with "The Antagonism Between the Sexes", and has 61-pages of advice from author Joseph McCabe. This softbound book was published by Haldeman-Julius Publications in 1929 and is in very good condition with no tears, creases or blemishes to the text. A rare find, and ahead of its time in dealing with equal rights for women.