"Chūgoku Keizai Rekishi Genjidai." . . "中国 経済 歴史 元時代" . "Jing ji xue Zhong guo li shi." . . "經濟學 中國 歷史" . "Sō gen keizaishi"@ja . . . "History" . . . . . . . . "宋元經濟史" . . . . "Sō Gen keizaishi" . . . . "Song yuan jing ji shi"@en . "Song yuan jing ji shi" . . . . . . . "Sung Yuan ching chi shih" . . . . "宋元経済史" . . . . . "Song Yuan jing ji shi" . . . . "Sung Yüan ching chi shih" . . . . . . . . . . . . "Song Yuan jing zhi shi" . . . . . . . . "宋元经济史" . "Chine" . . . . "Chūgoku Keizai Rekishi Sōjidai." . . "中国 経済 歴史 宋時代" . "Zhong guo" . . "中國" . "China" . . "China." . "Jing ji Zhong guo Song(960-1279)" . . "經濟 中國 宋(960-1279)" . "To 1644" . . "Economic history." . .