Die vier Factoren der Geburt ; Grundzüge einer Physik der Geburt.

Licence: Public Domain Mark

Credit: Die vier Factoren der Geburt ; Grundzüge einer Physik der Geburt. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.