Guo ji fu wu wai bao wen ti yan jiu : Guo ji fu wu wai bao wen ti yan jiu/ Guo ji fu wu wai bao de jing ji xiao ying yan jiu : Guo ji ren dao fa ruo gan wen ti yan jiu / Shen ji du li xing wen ti yan jiu = Guo jia zhi li wen ti yan jiu/ Guo ji jiao yu fu wu mao yi fa lü wen ti yan jiu/ Xian dai fu wu ye zheng ce wen ti yan jiu : Dang shi xue ji ben wen ti yan jiu / Guo ji bao gao wen xue yan jiu/