On certain variations in the vocal organs of the passeres : that have hitherto escaped notice / Johannes Muller ; the translation by F. Jeffrey Bell ; edited, with an appendix, by A.H. Garrod.

Public Domain Mark

You can use this work for any purpose without restriction under copyright law. Read more about this licence.

Credit

On certain variations in the vocal organs of the passeres : that have hitherto escaped notice / Johannes Muller ; the translation by F. Jeffrey Bell ; edited, with an appendix, by A.H. Garrod. Public Domain Mark. Source: Wellcome Collection.

Provider

This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.