Saraphi, Nongnut, Piyarat Meekaew, Yuppayao Tokeeree, and Chaipan Saraphi. 2019. “SPECIES DIVERSITY OF NATIVE EDIBLE TUBER CROP IN SURIN PROVINCE”. PSRU Journal of Science and Technology 4 (2). Phitsanulok, Thailand:43-53. https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/152184.