Barbosa, D.C.A. “Distribution of Anadenanthera Macrocarpa (Benth.) Brenan Seedlings in an Area of the Caatinga of Northeastern Brazil”. Boletim De Botânica, vol. 13, junho de 1992, p. 1-10, https://doi.org/10.11606/issn.2316-9052.v13i0p1-10.