Lavania, S. K., R. P. Singh, and Virendra Singh. 2006. “Effect of Gibberellic Acid and PH on Seed Germination in Blue Pine (<I>Pinus wallichiana< I>, A.B. Jacks)”. Indian Forester 132 (8):1024-28. https://doi.org/10.36808/if/2006/v132i8/4243.