Lopes A, Piedade MTF. The period of contamination with petroleum influences the regrowth of Echinochloa polystachya (HBK) Hitchcock in varzea soil in Central Amazon?. Biota Neotrop. [Internet]. 2010 Dec. 1 [cited 2024 Apr. 23];10(4). Available from: //www.biotaneotropica.org.br/BN/article/view/729