Alam, SMS, M Rashedujjaman, MM Hossain, and KMD Hossain. 2017. “Comparative Harvesting and Threshing Cost of Paddy by Combine Harvester and Self-Propelled Reaper and Thresher”. Journal of Environmental Science and Natural Resources 10 (1):133-36. https://doi.org/10.3329/jesnr.v10i1.34706.