POWELL, A. M. John Earl Averett (19 April 1943–1 January 2017). Journal of the Botanical Research Institute of Texas, [S. l.], v. 11, n. 2, p. 619–627, 2017. DOI: 10.17348/jbrit.v11.i2.1092. Disponível em: https://journals.brit.org/jbrit/article/view/1092. Acesso em: 7 may. 2024.