VIEIRA, J. K. C.; ALMEIDA, M. C. DE. MANAGEMENT OF MATERIALS, ASSETS, AND PURCHASING PROCESSES IN SMALL BUSINESSES: MANAGEMENT CHALLENGES FACED BY ENTREPRENEURS WITHOUT ACADEMIC TRAINING. Revista Ibero-Americana de Humanidades, Ciências e Educação, v. 12, n. 7, p. 1–21, 31 Jul.2026.