We have information from several sources:
Handbook of Energy CropsJames A. Duke. 1983. unpublished.
Magness, J.R., G.M. Markle, C.C. Compton. 1971. Food and feed crops of the United States.
New Crops: Solutions for Global ProblemsNoel Vietmeyer
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Last modified: March 15 2013 by aw