Keep your mouth shut.
Subtitle: A popular treatise on mouth-breathing: its causes, effects, and treatment.
By: By Fred. A. A. Smith... To which is added, an appendix on ophthalmia in new-born children, by Dr. Smith and Dr. Swan M. Barnett.
Contributors: Burnett, Swan M. 1847-1906.
Publisher: Roberts brothers
Published: 1893
Place of publication: Boston
Language: eng
Number of pages: 73
Subjects: Mouth breathing