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本销售排行数据均来自于开卷图书市场研究所的“开卷全国图书零售市场观测系统”的抽样数据,截至2005年12月已有232个城市1093门市加盟该系统。
The sales ranking data are from the open book market research institute “open book retail market observing system,” the sample data, as of December 2005 has 232 cities 1093 stores to join the system.