PINTO, Anna Caroline Andrade; MAIA, Tiago Felipe Arruda. Characterization of secondary deposits of columbite-tantalite minerals found in the city of Rorainópolis (RR), Brazil. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 8, n. 4, p. 450–468, 2020. DOI: 10.31686/ijier.vol8.iss4.2299. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/2299.. Acesso em: 19 may. 2024.