Duangjai, K. (2019). APPLICATION OF CHEMISTRY TO CONSTRAIN TYPE OF PROTOLITHS AND METAMORPHISM CONDITIONS OF THE HOST ROCKS OF FLUORITE MINE AT KHAO CHONG INSI, KANCHANABURI PROVINCE, THAILAND. Research Journal Phranakhon Rajabhat : Science and Technology, 15(2), 63–75. retrieved from https://li01.tci-thaijo.org/index.php/PRRJ_Scitech/article/view/193029