สุวรรณช., & ทองแป้นร. (2019). An Elderly Population Database Development With the GIS Application:: A Case of Nam-Jo Municipality, Mae-Tha District, Lampang Province. Journal of Graduate Research, 10(1), 219-234. Retrieved from https://so02.tci-thaijo.org/index.php/banditvijai/article/view/183673