Talwar, K. K., and H. P. Bratnagar. “Effect of Macro-Element Deficiencies on Fresh and Dry Mattbr, Mineral Uptake and Holocellulose Production by <I>Pinus garibaea< I> Seedlings”. Indian Forester, vol. 105, no. 5, May 1979, pp. 342-55, doi:10.36808/if/1979/v105i5/11329.