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2. Fuel in the Field;AGCO Corporation,2014
3. An assessment of mechanical vs manual harvesting of the sugarcane in Sudan – the case of Sennar Sugar Factory;Ahmed;Journal of the Saudi Society of Agricultural Sciences,2014
4. Small-scale woody biomass harvesting systems;Ashton,2007
5. Cost factors in harvesting woody biomass. Pages 153–156;Ashton,2007