Study in Sonority (Riegger, Wallingford Constantine)

This work has been identified as being in the public domain in Canada, as well as countries where the copyright term is life+50 years. However, this work is probably still protected by copyright in the United States, as well as in countries where the copyright term is life+70 years (including all EU countries), unless an exception applies. See public domain for details.
This work may not be in the public domain in all countries. Please check the copyright laws of your country.