Kongmanee, Chaiya, Palakorn Satsue, and Purawich Phitthayaphinant. 2019. “Output and Outcome of Para-Rubber Research Projects under Para-Rubber Industry Development Project Package”. Kasetsart Journal of Social Sciences 40 (3):774-82. https://so04.tci-thaijo.org/index.php/kjss/article/view/242373.