Pornchai Pantung. (2024) The Promotion and Development Process for Grassroot Economic Products in Thai Chana Suek Sub-district, Thung Saliam District, Sukhothai Province. <i>Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University</i>, <i>18</i>(1), 155-168.Pornchai Pantung. "The Promotion and Development Process for Grassroot Economic Products in Thai Chana Suek Sub-district, Thung Saliam District, Sukhothai Province". Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 18 (2024):155-168.Pornchai Pantung. The Promotion and Development Process for Grassroot Economic Products in Thai Chana Suek Sub-district, Thung Saliam District, Sukhothai Province. Pibulsongkram Rajabhat University:ม.ป.ท. 2024.