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References

  • Farrell, A. E., R. J. Plevin, B. T. Turner, A. D. Jones, M. O’Hare, and D. M. Kammen. 2006. Ethanol can contribute to energy and environmental goals. Science 311(5760): 506508.
  • Glass, G. V. 1976. Primary, secondary, and meta-analysis of research. Educational Researcher 5(10): 38.