Verma, V.P.S. and Payal, P.S. 1976. Resin Yield Potential of Chir Pine (<I>Pinus roxburghii</I> Sargent). Indian Forester. 102, 10 (Oct. 1976), 712–720. DOI:https://doi.org/10.36808/if/1976/v102i10/11955.