On the sounds of respiration and of the voice / by Peyton Blakiston.
License information
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
On the sounds of respiration and of the voice / by Peyton Blakiston. Credit: 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.. Public Domain Mark