Karbeka, M., Lema, A. and Padalegi, J. (2026) “MICROSTRUCTURAL CHARACTERIZATION OF BIOCHAR–CHITOSAN COMPOSITES LOADED WITH NITROGEN AND Fe FOR SLOW-RELEASE FERTILIZER APPLICATIONS”, Walisongo Journal of Chemistry, 9(1), pp. 67–75. doi: 10.21580/wjc.v9i1.31598.