EZEKIEL ONORUOIZA FRIDAY, ADEGOKE K. MARTINS, SUNDAY AYIGUN. COMPARATIVE ANALYSIS OF SOME HEAVY METALS AND PHYSICOCHEMICAL PARAMETERS OF EFFLUENTS FROM YOLA AND NUMAN ABATTOIRS, ADAMAWA STATE NIGERIA: Management. HIJMBPS. 2025;9(3). doi:10.70382/hijmbps.v9i3.023