| http://www.w3.org/ns/prov#value | - More particularly, FIG. 12a is a plan view showing the substrate surface; FIG. 12b is a cross-section of the substrate; FIG. 12c is a plan view of the substrate surface after it has been hardened with resin impregnated therein; FIG. 12d is a cross-sectional view of the resin impregnated substrate; and FIG. 12e is a cross-sectional view of a substrate having a three layer structure and hardened wit
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