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Filtering by: Contributor Pfeifer, Geoffrey Remove constraint Contributor: Pfeifer, Geoffrey Creator Cadilek, David Remove constraint Creator: Cadilek, David License https://creativecommons.org/licenses/by-nc/4.0/ Remove constraint License: https://creativecommons.org/licenses/by-nc/4.0/ Subject Power the World Remove constraint Subject: Power the World Year 2016 Remove constraint Year: 2016

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