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lecture1-360p.mp4 download	943.3 MB	2013-09-06 15:44:32+00:00
lecture1-720p.mp4 download	1.4 GB	2013-09-06 15:49:53+00:00
lecture1-1080p.mp4 download	2.2 GB	2013-09-06 15:30:06+00:00