Economics: opportunity cost,,, watch!!!

Saturday, 7 November 2009

opportunity cost,,, watch!!!

3 comments:

chris sivewright7 November 2009 at 19:40
Is this now a monthly blog?
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chris sivewright7 November 2009 at 19:43
your video stops at 21 seconds
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Di7 November 2009 at 22:10
yeap monthly blogg
it is everything okey with video.
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