OKORODUDU, F. O. .; ONYEACHOLEM, . I. J. Visualising and analysing data on Covid-19 pandemic outbreak in Nigeria. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT, [S. l.], v. 19, n. 2, 2022. Disponível em: https://delsunjse.com/index.php/njse/article/view/8. Acesso em: 7 may. 2024.