Srithamma C. The participation in the campaign to prevent and resolve drug of youth leaders TO BE NUMBER ONE in secondary schools MuangKhonKaen Province. ThaiJA [internet]. 2014 Apr. 1 [cited 2026 Sep. 14];2(1):31-47. available from: https://he01.tci-thaijo.org/index.php/pmnidat/article/view/248741