John, A., Varghese, Y. A. and K. Mushrif, S. (2009) “Performance of indigenous and exotic clones of rubber in india”, Journal of Plantation Crops, 37(2), pp. 97–101. Available at: https://updatepublishing.com/journal/index.php/JPC/article/view/5946 (Accessed: 30 April 2024).