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ASM Golam Hafeez, Md Abdullah A Kafi, Md Rezaul Karim, Shamim Ahamed and Mehdee Mohay Men Ur Rahman 2023. Technical efficiency of early variety country bean cultivation in selected areas of Bangladesh: a stochastic frontier approach. Research in Agriculture Livestock and Fisheries. 10, 2 (Sep. 2023), 155–164. DOI:https://doi.org/10.3329/ralf.v10i2.68770.