de Jesus Carretilha, M., Rocha Pinto, F., Barbosa de Alencar, D., & de Freitas Lopes, G. (2019). Quantification of CO2 Emissions by Top-down Method of Manaus Public and Private Transport Fleet. International Journal for Innovation Education and Research, 7(11), 274–282. https://doi.org/10.31686/ijier.vol7.iss11.1879