Somboonsuke, B., Kongmanee, C., Thongtrai, N., & Phitthayaphinant, P. (2018). Potential of para-rubber production in Thailand: Production technology management, problems and suggestions for yield improvement. Kasetsart Journal of Social Sciences, 39(1), 645–659. Retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/242476