Karnik, M. G., et al. “Hydrolytic Studies on Fir (<I>Abies webbiana< I>) and Spr Uce (<I>Picea smithiana< I>)”. Indian Forester, vol. 92, no. 1, Jan. 1966, pp. 59-60, doi:10.36808/if/1966/v92i1/25279.