สุวรรณ ช. and ทองแป้น ร. (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), pp. 219–234. Available at: https://so02.tci-thaijo.org/index.php/banditvijai/article/view/183673 (Accessed: 29 March 2024).