RONOH , Obadiah C.; WASWA , Peter; LUSWETI , John K. Effect of Scientific Competencies in Chemistry Practical on Performance in Chemistry Subject . African Journal of Education,Science and Technology (AJEST), [S. l.], v. 6, n. 2, p. Pg 206–216, 2021. Disponível em: http://ajest.org/index.php/ajest/article/view/776. Acesso em: 3 apr. 2026.