51. Sane sex life and sane sex living: some things that all sane people ought to know about sex nature and sex functioning; its place in the economy of life, its proper training and righteous exercise Author(s): Long, H. W. (Harland William), 1869-1943 author Publication: New York : Eugenics Publishing Co., Inc., [1922] Subject(s): Sexual BehaviorSex Education
52. Sex knowledge Author(s): March, Norah H. (Norah Helena) author Publication: New York : E.P. Dutton & Company, [1922] Subject(s): Sexual BehaviorSex EducationSexuality -- physiology