Prayot P. AN EVALUATION OF WHITE SCHOOL FREE FROM DRUG AND VICES PROJECT OF MAELAUNGUPPATHUMTHAIKEEREE SCHOOL, PHAYA MENGRAI DISTRICT, CHIANGRAI PROVINCE. JSBA [internet]. 2022 Jun. 30 [cited 2026 Apr. 22];7(6):401-17. available from: https://so04.tci-thaijo.org/index.php/JSBA/article/view/259155