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RE: **ROCKET SCIENCE(How a rocket engine works)**

in #steemstem • 5 years ago

Congratulations @philipme! You received a personal award!

Happy Birthday! - You are on the Steem blockchain for 2 years!

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Vote for @Steemitboard as a witness to get one more award and increased upvotes!
5 years ago in #steemstem by
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