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2 | http://nk.chosun.com/tour/tour.html?ACT=TourPlace09 |
3 | www.cavekorea.com |
4 | http://www.startour.pe.kr/local/china/china_infom_JIL.htm |
5 | http://www.kormt.co.kr/rem/baikdu.html |
6 | http://www.hotchina.co.kr/ |
7 | http://myhome.naver.net/yichoe/dong/17basementpool.jpg |