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Indriani, Suriyanti and Ramlawati 2026. OPERATIONAL MANAGEMENT ANALYSIS IN OPTIMIZING CHITOSAN FERTILIZER PRODUCTION BASED ON SWIMMING CRAB SHELL WASTE AT THE CANGKANG SALONA GROUP, LOKTUAN VILLAGE. Journal Informatic, Education and Management (JIEM). 8, 1 (Jan. 2026), 927~931. DOI:https://doi.org/10.61992/jiem.v8i1.285.