1. Sexual physiology: a scientific and popular exposition of the fundamental problems in sociology Author(s): Trall, R. T. (Russell Thacher), 1812-1877 Publication: New York : Miller, Wood & Co., Publishers ... ; London : J. Burns ..., 1867 Subject(s): SexMarriagePregnancyReproductionSex PreselectionWomen's Rights
2. Physiological law governing the production of the human sex Author(s): Bradford, W. Ellis, author Publication: [Illinois?] : [publisher not identified], 1889 Subject(s): Sex PreselectionOvulation -- physiology
