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المؤلفون: S.E. Armstrong, A.P. Burkhart, R.S. Hopkins, F.K. Heazelton, C.H. Turnquist, R.L. Rogers, J.L. Blish, H.J. Crume, G.F. Ambrose, F.L. Hunt, C.A. Herrick, Wm.H. Flint, Alexander H. Reynolds, Albert L. Midgley, A.H. Hipple, Abram Hoffman, J.G. Reid, D.M. Gallie, E.W. Elliot, T.I. Way, H.E. Germann, George M. Boehler, W.E. Stoft, B.M. Brickman, Burt Abell, Walter H. Ellis
المصدر: The Journal of the American Dental Association (1922). 9:998-1008