Ohue PI, Charles IU, Okukpon K. Heijunka Manufacturing Methodology and Performance of Manufacturing Firms in Kaduna State, Nigeria. GVU J. Manag. Soc. Sci. [Internet]. 2025 Dec. 28 [cited 2026 Apr. 11];10(2):1-10. Available from: https://gvucolmass.site/index.php/gvu-jmss/article/view/2