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Crash Course Introduction

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Uploaded on Mar 16, 2015

You can directly support Crash Course at http://www.patreon.com/crashcourse
If you can afford to pay a little every month, it really helps us to continue producing great content.

Crash Course DVDs
Biology:
http://dftba.com/product/1av/crashcou...

World History:
http://dftba.com/product/1aw/CrashCou...

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