Lima, N. S., Silva, D. F. da, Nunes Neto, W. R., Silva, D. M. da, Sousa, L. C. A. de, & Silva, M. R. C. (2022). Evaluation of the quality of superficial sediment using principal components analysis of the physical–chemical attributes of the Mearim River – Brazil. Ciência E Natura, 42, e5. https://doi.org/10.5902/2179460X41267 (Original work published December 31, 2020)