| http://www.w3.org/ns/prov#value | - Perhaps the most remarkable illustration of this is to be found in the experience of the American manufacture of flint glass, in which a reduction, since 1870, of from 70 to 80 per cent in the market price of such articles of glass table-ware as goblets, tumblers, wine-glasses, bowls, lamps, and the like, consequent upon the adoption of methods greatly economizing labor and improving quality, has
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