ผลประเสริฐ พ, วิทยถาวรวงศ์ พ. The Effectiveness of the Process of Developing the Life Quality of the Elderly under the Sufficiency Economy: A Case Study Lom Kao District, Phetchabun Province. JPMAT [Internet]. 2018 Jul. 5 [cited 2024 May 7];6(3):240-55. Available from: https://he01.tci-thaijo.org/index.php/JPMAT/article/view/132938