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H11~13-1s - Otaru University of Commerce13-1p.pdffttl. 8) 2134 2135 2123 473 446 462 2797 2787 2791 89 2, 681 2, 649 2, 653 1 218 1, 227 1, 160 45. 46. 43. 4% 3% 2, 2, 2, 681 649 653

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