EFFECT OF MARKET PENETRATION AND PRODUCT DEVELOPMENT ON PERFORMANCE OF MEDIUM ENTERPRISES IN NORTH CENTRAL NIGERIA. International Journal of Management (IJM), [S. l.], v. 14, n. 4, p. 88–101, 2023. Disponível em: https://lib-index.com/index.php/IJM/article/view/IJM_14_04_005.. Acesso em: 21 oct. 2025.