http://bkds.ustb.edu.cn/ Journal of University of Science and Technology Beijing ( Social Sciences Edition) en 1008-2689 http://bkds.ustb.edu.cn/article/id/cb673652-72ab-4c98-9f49-d4d92972a9cf Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 封二-封二. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/cb673652-72ab-4c98-9f49-d4d92972a9cf 封二 http://bkds.ustb.edu.cn/article/id/817b5863-9b20-4c22-a46e-a3c809849393 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 1-4,16. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/817b5863-9b20-4c22-a46e-a3c809849393 1 http://bkds.ustb.edu.cn/article/id/9e402765-04d0-477a-a14a-f178342cf185 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 5-7. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/9e402765-04d0-477a-a14a-f178342cf185 5 http://bkds.ustb.edu.cn/article/id/5570c994-a428-449c-aaae-aedd60172aeb Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 8-11. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/5570c994-a428-449c-aaae-aedd60172aeb 8 http://bkds.ustb.edu.cn/article/id/894eac2a-28c3-445a-bb67-3db32b7b46bc Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 12-16. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/894eac2a-28c3-445a-bb67-3db32b7b46bc 12 http://bkds.ustb.edu.cn/article/id/e14c5bc8-e3f3-4841-a883-f7dc98769bf4 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 17-20. article doi: ljj雷竞技下载学报社科版 17 2 http://bkds.ustb.edu.cn/article/id/e14c5bc8-e3f3-4841-a883-f7dc98769bf4 17 http://bkds.ustb.edu.cn/article/id/27f8d80b-28bb-41b8-960b-13be4f3caaa6 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2001 17(2): 21-23,26. article doi: 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