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pro vyhledávání: '"E T, Degnan"'
Autor:
M D, Siegal, E T, Degnan
Publikováno v:
ASDC journal of dentistry for children. 52(5)
Water samples from domestic wells in a four-county area of New Mexico were analyzed for fluoride over a twenty-four month period, using a specific ion electrode. Of the 503 nonrandomly selected samples analyzed, 33 (6.6 percent) had less than 0.3 ppm