---
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  - display_name: 'Author : Valerie J. Karplus (Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change) '
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      - display_name: 'Should a vehicle fuel economy standard be combined with an economy-wide greenhouse gas emissions constraint? Implications for energy and climate policy in the United States'
        uri: /article/10.1016/j.eneco.2012.09.001
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  - display_name: 'Author : Valerie J. Karplus '
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display_name: Valerie J. Karplus
first_name: Valerie J.
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