자료방
세계 4대문명 (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=undefined