[1]
D. P. Uniyal, S. K. Verma, S. K. Sharma, and V. K. Sharma, “Provenance Variation in the Specific Gravity of Wood of Chir Pine (<I>Pinus roxburghii</I> Sarg.)”, Indian Forester, vol. 128, no. 12, pp. 1295–1301, Dec. 2002.