| http://www.w3.org/ns/prov#value | - The solution preferably includes a soluble precursor to yield a concentration of from about 1 to about 50 weight percent of the glass composition, more preferably from about 1 to 20 weight percent of the glass composition and even more preferably from about 3 to about 15 weight percent of the glass composition, such as about 5 to 7.5 weight percent of the glass composition.
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