Onumbu, Chime Ishmael, and Comfort Emma Elechi. “Knowledge of Occupational Hazards Among Welders in Rivers State”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , vol. 3, no. 3, Sept. 2022, pp. 105-13, https://fnasjournals.com/index.php/FNAS-JSI/article/view/89.