Paraguassú-Chaves, C. A., Cavalcante, F. R. C., Trindade, C. D., Filho, S. A., Cavalcante, A. M. M. da F., Góes, S. B. de, Costa, V. A. U., Almeida, F. M. de ., & Dantas, L. R. M. (2021). Perception index of environmental education in fundamental education schools in a city on the Brazil / Bolivia frontier. International Journal for Innovation Education and Research, 9(5), 321-334. https://doi.org/10.31686/ijier.vol9.iss5.3094