| http://www.w3.org/ns/prov#value | - Heretofore many efforts have been made to provide a coating of coloring material on one or more surfaces of a brick or tile of ceramic, clay, concrete or other base material and these efforts have included painting or spraying the coloring material on the base material, forming a liquid mixture of the coloring material and pouring such mixture on the base material, and coating the vertical walls o
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