Pokhriyal, T.C. and Raturi, A.S. 1985. A Study of Nitrate Reductase Activity in the <I>Populus deltoides</I> Leaves. Indian Forester. 111, 2 (Feb. 1985), 82–89. DOI:https://doi.org/10.36808/if/1985/v111i2/10167.