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Autor: Martin, W.T., Bates, C.G., Wallace, J.F., Swank, E.R., Biddle, J.F., Leonard, Geo S., Fife, J.G., Talley, F.R., Buckley, J.P., Perry, King S., Mellen, Philip Z., Mills, Edward C., Prinz, M.M.
Zdroj: In The Journal of the National Dental Association February 1918 5(2):217-221
Databáze: ScienceDirect