MANGALE, Betta Kombe; RICHARD ISAAC MWANGANGI, PHD; PETER NGATIA, PHD. Mr Betta Kombe. Research Beacon, [S. l.], v. 20, n. 2, p. 192–212, 2026. DOI: 10.70907/67bkny74. Disponível em: https://researchbeacon.org/index.php/research-beacon/article/view/49. Acesso em: 27 may. 2026.