erc: who: Campbell, Richard J. what: China and the United States--A Comparison of Green Energy Programs and Policies when: 20100614 where: https://digital.library.unt.edu/ark:/67531/metadc491151/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/