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المؤلفون: H.G. Farrell, R.B. Wilson, Reuel May, Marshall E. Gates, Thew J. Ice, D.M. Gallie, R.P. Phelan, H.F. Peck, E.C. Hume, D.C. Bacon, M. Evangeline Jordon, Rene Boisson, J. Polus, Alfred Walker, Leland Barrett, Milo Hellman, John T. McIntee, Edward G. Link, George T. Harter, Howard F. Lewis, Herbert A. Pullen, Burt Abell, George Grieve, Ernest V. Madison
المصدر: The Journal of the American Dental Association (1922). 12:750-756