Do VTC, Nguyen TQ, Pham YT, Do KT. Study on the Production and Composition of Essential Oil from Cinnamomum cassia Bark in Yen Bai Province of Vietnam. TJNPR. 2024;8(4):6807-6813. Accessed November 29, 2024. https://tjnpr.org/index.php/home/article/view/4148