“EFFECT OF MARKET PENETRATION AND PRODUCT DEVELOPMENT ON PERFORMANCE OF MEDIUM ENTERPRISES IN NORTH CENTRAL NIGERIA”, IJM, vol. 14, no. 4, pp. 88–101, May 2023, Accessed: Jun. 17, 2026. [Online]. Available: https://openlibindex.com/index.php/IJM/article/view/IJM_14_04_005