Sexual physiology : a scientific and popular exposition of the fundamental problems in sociology / by R.T. Trall.

Licence: Public Domain Mark

Credit: Sexual physiology : a scientific and popular exposition of the fundamental problems in sociology / by R.T. Trall. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)