Saratho (Petchthaworn), P. .; Chimhad, P. .; Khaenamkhaew, D. . A STUDY OF POLICY FOR SUSTAINABLE DEVELOPMENT OF THE ELDERLY QUALITY IN THE AREA OF THA YANG SUB-DISTRICT ADMINISTRATIVE ORGANIZATION, THUNG YAI DISTRICT, NAKHON SI THAMMARAT PROVINCE. JMND 2022, 9, 469-479.