Siju, T., Veeraputhran, S., Joseph, J. and George, K. T. (2013) “Trends in adoption of planting density in rubber smallholdings in the traditional regions of India”, Journal of Plantation Crops, 41(3), pp. 425–427. Available at: https://updatepublishing.com/journal/index.php/JPC/article/view/5860 (Accessed: 4 May 2024).