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 Economics of using combine harvesters in the mechanized rainfed schemes of eastern Sudan.
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ISSN 1728-9556. Available at: &lt;<a href="http://37.60.236.48/index.php/gjas/article/view/1250" target="_new">http://37.60.236.48/index.php/gjas/article/view/1250</a>&gt;. Date accessed: 03 june 2026.