![](http://www.alamy.com/thumbs/6/2D59A1D2-CEC5-47D9-87EC-8114F628C268/AE6RW8.jpg)
hay bale in field straw harvest bioethanol,biobutanol,biomass automotive fule enviromentally friendly
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Keywords: automotive, bale, biobutanol, bioethanol, biomass, enviromentally, field, friendly, fule, harvest, hay, straw