Negi, M.S. and Tandon, V.N. 1997. Biomass and Nutrient Distribution in an Age Sequence of <I>Populus deltoides</I> Ecosystems in Haryana. Indian Forester. 123, 2 (Feb. 1997), 111–117. DOI:https://doi.org/10.36808/if/1997/v123i2/5903.