Singh, Bajrang, and S. S. Ramam. “Reserves of Nutrient in the Litter of <I>Pinus patula< I> Plantations in Darjeeling Himalayas”. Indian Forester, vol. 106, no. 12, Dec. 1980, pp. 877-84, doi:10.36808/if/1980/v106i12/11288.