. . "孫敦恒" . "Tun-heng" . "孫敦恒" . "孫敦恆" . "孙敦恒" . "dun" . "孙敦恒, (文史研究 )" . "Tun-heng Sun" . "1900" . "ao" . "Sun"@en . "孫敦恒" . "Tun-heng Sun" . "孙敦恒" . "Dunheng Sun"@en . "Sun ao heng" . "孙敦恆" . "(文史研究 ) 孙敦恒" . "Sun, Dunheng"@nl-NL . . . . "Sun, Dunheng, (wen shi yan jiu )" . "孙敦恆" . "孙敦恆" . . "Sun dun heng" . . "ao Sun ao heng" . "dun Sun dun heng" . "Dunheng"@en . . "孙敦恒" . "(wen shi yan jiu ) Dunheng Sun" .