“Noise-Level Characterization of Portable Electric-Power Generators in North-Central Nigeria: A Brand-by-Brand Comparative-Study”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) , vol. 5, no. 4, Apr. 2019, pp. 44-58, https://doi.org/10.31695/IJERAT.2019.3427.