Medeiros, S. H. da S., Nascimento, C. C. do, Oliveira, B. R., Souza, M. A. S. de, & Barros, F. B. (2021). Diagnosis of hollow trees in an area of effective sustainable forest management in the Amazon forest. International Journal for Innovation Education and Research, 9(1), 527–539. https://doi.org/10.31686/ijier.vol9.iss1.2926