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. 2015 Feb 12;8:18. doi: 10.1186/s13068-014-0188-5

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© Lynd et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Agriculture (in)dependence and gasoline (in)dependence and pastures/prairies area [ 89 , 91 ].