H.M.P.P.S. Herath and D.M. Endagamage 2022. How the Supply Chain Management Practices influence on Operational Performance? A Case of Manufacturing Firms in Sri Lanka. Integrated Journal for Research in Arts and Humanities. 2, 5 (Sep. 2022), 1–7. DOI:https://doi.org/10.55544/ijrah.2.5.1.