[1]
P. da C. Souza, S. S. Simplício, R. P. dos Santos, and C. S. G. R. Pacheco, “Analysis of the coal production chain from the caatinga vegetation in the rural area Petrolina – PE”, ijaers, vol. 7, no. 1, Jan. 2020, Accessed: Jul. 22, 2024. [Online]. Available: https://journal-repository.com/index.php/ijaers/article/view/1556