Special report of the Department of Public Health relative to the decay of teeth resulting from a lack of fluorine: under chapter 38 of the resolves of 1945 and chapter 51 of 1946, December, 1946

Special report of the Department of Public Health relative to the decay of teeth resulting from a lack of fluorine: under chapter 38 of the resolves of 1945 and chapter 51 of 1946, December, 1946