RT @WorldAndScience: Safety first.... https://t.co/W2CNYZEyf7 - The Calculator Guide from Twitter

Safety first.... pic.twitter.com/W2CNYZEyf7

— World and Science (@WorldAndScience) April 14, 2018

from Twitter https://twitter.com/GuideCalculator

April 15, 2018 at 10:08AM
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