Arya, S.R. et al. 1990. Optimum Sowing Time of Spruce (<I>Picea smithiana</I> Wall Ex. Boiss) in Western Himalayas. Indian Forester. 116, 4 (Apr. 1990), 329–330. DOI:https://doi.org/10.36808/if/1990/v116i4/8829.