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https://store.steampowered.com/app/400/Portal/
https://gaming.stackexchange.com/questions/20975/should-i-play-portal-...
https://www.amazon.com/Portal-PC/dp/B00140P9G0
https://en.wikiquote.org/wiki/Portal_(game)
https://www.gameinformer.com/b/features/archive/2010/03/17/thinking-wi...
https://steamcommunity.com/app/400/discussions/
https://steamcommunity.com/app/400/discussions/0/340412628171160279/
https://pcgamingwiki.com/wiki/Portal
https://enterprise.arcgis.com/en/portal/latest/install/windows/stoppin...
https://www.npr.org/2011/04/19/135511250/portal-2-a-student-video-game...
https://www.swivle.com/content-portal
https://www.theverge.com/2018/5/15/17355694/facebook-teens-new-youth-p...
http://qubahq.com/2011/04/portal-2-just-the-beginning/
https://openforbusiness.wi.gov/
https://business4.wv.gov/
https://www.reddit.com/r/Portal/comments/8u04g7/should_i_buy_portal_1_...
Co-Authored By:
2020-10-24