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Using Biofuel woodgas pickup truck woodgas tractor Mother Earth News 1 ton of biomass contains the equivalent energy of 5.5 barrels of oil click to continue.

Using Biofuel woodgas pickup truck woodgas tractor Mother Earth News 1 ton of biomass contains the equivalent energy of 5.5 barrels of oil click to continue.

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Using Biofuel

Using Biofuel

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