Campêlo AB, Oliveira LB de. Occurrence and vertical distribution of <i>Azotobacter</i> and <i>Beijerinckia</i> in some soil profiles of the humid zone of Pernambuco. PAB [Internet]. 2014 Apr. 15 [cited 2026 Jul. 13];4(1):47-52. Available from: https://apct.sede.embrapa.br/pab/article/view/17776