Joshi, A. P., Gupta, S. K., Agrawal, A. K., & Chaudhary, A. (1986). Association, Correlation and Regression Studies of Forest Floor of <I>Pinus roxburghii</I> Sarg. of Garhwal Himalayas. Indian Forester, 112(5), 387–391. https://doi.org/10.36808/if/1986/v112i5/9873