YAKATUN, A.A; ALFA, A.Y. FORMULATION AND PRODUCTION OF PRINTING INK USING AFRICAN BLACK PLUM (Vitex Doniana Sweet) LEAVES. International Journal of African Sustainable Development Research, Nigeria, v. 8, n. 2, 2025. DOI: 10.70382/tijasdr.v08i2.049. Disponível em: https://taapublications.com/tijasdr/article/view/537.. Acesso em: 4 oct. 2025.