Sehgal, J.S. et al. 1992. Effect of Nitrogen Fertilizers on the Nitrogenase Activity and Rhizosphere Microflora in <I>Enterolobium timbouva</I> Mart. Indian Forester. 118, 3 (Mar. 1992), 218–226. DOI:https://doi.org/10.36808/if/1992/v118i3/8412.