comparison org/intro.org @ 309:5d448182c807

added/verified YouTube backup links for all videos.
author Robert McIntyre <rlm@mit.edu>
date Sat, 18 Feb 2012 11:42:34 -0700
parents 7e7f8d6d9ec5
children b84701e4f6ae
comparison
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308:3f0d49ec0996 309:5d448182c807