เกษมกุลทรัพย์ เ, พัฒนพงศา น. The Development of Education Model by Sub-District Non-Formal Education for Developing the Aging Quality of Life Sub-Urban Areas in Chiang Mai Province Sub-Urban areas. CSD. Res. J. [Internet]. 2018 Dec. 26 [cited 2024 May 19];17(2):73-87. Available from: https://so05.tci-thaijo.org/index.php/cmruresearch/article/view/213901