Barbosa, R. D., de Lima, A. F. L., Simões, E. L., Brito Filho, E. G. de, Campos, M. C. C., Cunha, J. M. da, Mantovanelli, B. C., Silva, D. M. P., & Souza, F. G. de. (2019). Spatial variation of chemical attributes in archaeological dark earth under cocoa cultivation in Western Amazon. Bioscience Journal, 35(1), 27–41. https://doi.org/10.14393/BJ-v35n1a2019-37137