Poontep, W. , Thipkrd, P. , Damrongwattana, J. and Jamnongtham, M. 2024. GROUP MANAGEMENT UNDER THE PHILOSOPHY OF SUFFICIENCY ECONOMY: A CASE STUDY WITHIN KHAN OIL GROUP OF PISON THAI HERB, PAK NAKHON SUB - DISTRICT, MUEANG DISTRICT, NAKHON SI THAMMARAT PROVINCE. Journal of Innovation for Sustainable Social Development. 1, 1 (May 2024), 1–8.