Nakraksa R, Khlaisang J. DEVELOPMENT OF A VIRTUAL FIELD TRIP MODEL WITH GEOGRAPHIC INQUIRY PROCESS Integrated with 3D MAP FOR UPPER SECONDARY SCHOOL STUDENTS. ECT Journal [internet]. 2020 Dec. 26 [cited 2026 Aug. 29];15(19):44-59. available from: https://so01.tci-thaijo.org/index.php/ectstou/article/view/242970