Gao, H.-W. and Zhou, J.-G. (2010) “Primary-Secondary Wavelength Spectrophotometric Determination of Trace Amounts of Lignin Tannin in Water”, Asian Journal of Chemistry, 12(1), pp. 265–269. Available at: https://asianpubs.org/index.php/ajchem/article/view/22917 (Accessed: 25 November 2024).