TY - SER TI - INTERNATIONAL SCIENTIFIC JOURNAL OF ENGINEERING AND TECHNOLOGY (ISJET) Vol. 3 No. 2 July-December 2019 SN - 2586-8527 KW - E-Journal UR - https://ph02.tci-thaijo.org/index.php/isjet/issue/view/16094/Full%20Issue UR - https://ph02.tci-thaijo.org/index.php/isjet/issue/view/16094/Full%20Issue ER -