ALVAN, M.; OCHEKWU, E. B. Assessment of heavy metal pollution on some edible crop trees from vehicular movements on road side within University of Port Harcourt. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT, [S. l.], v. 18, n. 2, 2022. Disponível em: https://delsunjse.com/index.php/njse/article/view/28. Acesso em: 3 may. 2024.