| http://www.w3.org/ns/prov#value | - More particularly, FIG. 13a is a plan view of the substrate surface; FIG. 13b is a cross-sectional view of the substrate; FIG. 13c is a plan view of the substrate surface hardened with resin impregnated therein; FIG. 13d is a cross-sectional view of the resin impregnated substrate; and FIG. 13e is a cross-sectional view of a substrate having a three layer structure and hardened with resin impregna
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