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.lecture7.flv download	225.0 KB	2014-08-24 03:22:54+00:00
lecture7.flv download	480.8 MB	2014-08-24 03:22:54+00:00
lecture7.mov download	430.8 MB	2014-08-24 03:23:14+00:00
lecture7.mp3 download	47.8 MB	2014-08-24 03:23:32+00:00