1.
Pinto ACA, Maia TFA. Characterization of secondary deposits of columbite-tantalite minerals found in the city of RorainĂ³polis (RR), Brazil. Int J Innov Educ Res [Internet]. 2020 Apr. 1 [cited 2024 May 19];8(4):450-68. Available from: https://scholarsjournal.net/index.php/ijier/article/view/2299