The System 686: Propulsion October 25th, 2013 If you liked this post, you might just like: The System 150 The System 509: The Sweet Spot The System 599: Order of Operations See More Posts About: Coffee Rocket Science Comments: Buy A Print of This Comic Image Link Code: <a href="https://www.systemcomic.com/2013/10/25/the-system-686-propulsion/">http://www.systemcomic.com/comics/2013-10-25-propulsion.gif</a> A link to this post: Tweet StumbleUpon
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