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An Analysis of Coal Market Definition and the Merger Effect of Coal Enterprises
liu bing1; 2; xu bin1; 3; wang cai-xia1(1.research center of industrial and business organization; dongbei university of finance and economics; dalian 116025; china; 2.economic school; shandong institute of business and technology; yantai 264005; china; 3.research center of cluster and enterprise develop; jiangxi university of finance economics; nancang 330013; china)
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