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Harry G. Day : ウィキペディア英語版 | Harry G. Day Harry G. Day (October 8, 1906 – September 8, 2007〔( Family Search. org )〕) is an American chemist and professor. The Harry G. Day Lectureship in the Chemistry building at Indiana University in Bloomington, Indiana, was established in 1988, and a lecture hall was dedicated to him in 1991. ==Research== While at Indiana University in the 1950s, Dr. Harry G. Day, J.C. Muhler, and W.H Nebergall conducted research on the effects of fluorides in the reduction of dental cavities and tooth decay. The result of their research was Crest toothpaste, the first dentifrice toothpaste containing tin(II) fluoride.
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