大大封煤矿志 (续)大封煤矿志 (续)de Yulin LiuMateriasCoal tradeHistoryCoal mines and miningEdiciones (1)大封煤矿志 (续) (1993)[s.n.] · chinoMás obras de Yulin LiuSShanxi sheng zhi (Zhonghua Renmin Gongheguo di fang zhi congShanxi sheng zhi (Zhonghua Renmin Gongheguo di fang zhi cong shu)WWo men zai zhan huo zhong cheng zhangWo men zai zhan huo zhong cheng zhangYYang lao zhi liang ce pingYang lao zhi liang ce ping
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