★세계4대문명 (NHK-다큐멘터리)★     1) 메소포타미아 http://videofarm.daum.net/controller/video/viewer/Video.html?vid=NXCirXMHPuo$&play_loc=undefined'     2) 이집트 'http://videofarm.daum.net/controller/video/viewer/Video.html?vid=uHmieD-gu-M$&play_loc=undefined   3) 인더스 http://videofarm.daum.net/controller/video/viewer/Video.html?vid=utdbo9EzIeI$&play_loc=undefined   4) 황하 'http://videofarm.daum.net/controller/video/viewer/Video.html?vid=DiL8m-lzY7g$&play_loc=undefin