Singh, S. B., K. G. Prasad, G. N. Gupta, and G. S. Maurya. 1986. “Response of Two Year Old <I>Pinus patula< I> To N, P and K Fertilization”. Indian Forester 112 (1):38-42. https://doi.org/10.36808/if/1986/v112i1/9506.