Social Sciences & Humanities SearchReset Approved Dr. Surat Petchnil Approved Mr. Siriphan Nunsunanon Approved Asst. Prof. Dr. Sasitorn Suwannathep Approved Asst. Prof. Varaporn Noppawong Na Ayutthaya Approved Asst. Prof. Dr. Surapong Chudech Approved Assoc. Prof. Dr. Jaruwan Chontanawat Approved Asst. Prof. Dr. Passanan Assavarak Approved Asst. Prof. Dr. Aungkana Boonsem Approved Dr. Kongkarn Vachirapanang Approved Mr. Sutthipong Ruangchante Approved Assoc. Prof. Dr. Piyapong Janmaimool