First Aid Dentistry. E-book. Formato PDF Edward P. R. Ryan   -  Forgotten Books, 2017  - 

Due credit is given the works of modern writers, which have been consulted and without them it would have been impossible to accomplish what has been done. The gratitude of the writer is here expressed to Captain J. R. Harris, M. C., U. S. Army, for valuable suggestions and assistance; and special credit is due Mr. H. A. Utter for photos from which these illustrations were made.