Fernando, K.M.E.P., H.M.R. Premasiri, and K.V.V.S. Kudaligama. “Geo-Informatics Techniques for Assessing Physiological Status and Productivity of RRIC 121 Genotype of Hevea Brasiliensis (Rubber) under Different Harvesting Systems”. Journal of Tropical Forestry and Environment 6, no. 2 (March 14, 2017). Accessed May 3, 2024. http://journals.sjp.ac.lk/index.php/JTFE/article/view/2939.