erc: who: United States. Government Accountability Office. what: Climate Change Policy: Preliminary Observations on Options for Distributing Emissions Allowances and Revenue under a Cap-and-Trade Program when: 20090804 where: https://digital.library.unt.edu/ark:/67531/metadc293052/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/