Kumar, Satish, Ravi Kumar, Neeraj Kumar, and Rajendra Singh. 2011. “Effect of Spacing on Biomass Production, Nutrient Content and Uptake by Poplar (<I>Populus deltoides< I>) Plantations”. Indian Forester 137 (7):889-94. https://doi.org/10.36808/if/2011/v137i7/12876.