Phonman, R., Thong la-eard, S., Phongam, S., Boonma, N., & Kaewlam, K. (2025). Determination of Oxalic Acid in Thai Local Vegetables by Precipitation of Sodium Oxalate. Koch Cha Sarn Journal of Science, 47(1), 10–18. retrieved from https://li01.tci-thaijo.org/index.php/kochasarn/article/view/264719