WWen zi xueWen zi xuede Zheng GuMateriasChinese languageEtymologyEdiciones (1)Wen zi xue (1992)Gansu jiao yu chu ban she · chinoMás obras de Zheng GuDocumenting ChinaManagement science applications in tourism and hospitalityGGuo wai qing nian sheng huo lue yingGuo wai qing nian sheng huo lue ying