Suntornmeth P, Pisjan P, Bualek W. Information Retrieval System of the Tree by Using QR Code Technology. BALARMUTL [internet]. 2017 Jun. 30 [cited 2025 Dec. 11];5(1):1-13. available from: https://so05.tci-thaijo.org/index.php/balajhss/article/view/94693