The Relationship between Vehicular Maintenance and Exhaust Gas Emissions: A Comprehensive Multi-Parametric Empirical Study in Municipal Area in Calabar, Nigeria. Journal of Advanced Multidisciplinary Studies (JAMS), [S. l.], p. Page 143–149, 2026. Disponível em: https://jamsjournal.org/JAMS/article/view/535. Acesso em: 23 sep. 2026.