Singh, Virendra, and Shashi Kumar. “Seed Quality As Affected by Mid Cone Diameter in <I>Pinus roxburghii< I> Sargent”. Indian Forester 130, no. 7 (July 1, 2004): 757–761. Accessed July 9, 2025. https://indianforester.co.in/index.php/indianforester/article/view/2072.