Sehgal, J. S., V. Shanker, H. S. Sehgal, and T. C. Pokhriyal. 1992. “Effect of Nitrogen Fertilizers on the Nitrogenase Activity and Rhizosphere Microflora in <I>Enterolobium timbouva< I> Mart”. Indian Forester 118 (3):218-26. https://doi.org/10.36808/if/1992/v118i3/8412.