Singh, Virendra, S. Bhagat, and Om Bir Singh. “Effect of Seed Weight on Germination and Initial Seedling Growth in Spruce (<I>Picea smithiana< I> Wall, Boiss)”. Indian Forester 116, no. 5 (May 1, 1990): 403–406. Accessed October 29, 2025. https://indianforester.co.in/index.php/indianforester/article/view/8980.