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. 2019 Nov 21;24(23):4245. doi: 10.3390/molecules24234245

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Hierarchical clustering analysis (HCA) tree diagrams for the data obtained from the (a,b) Raman, and (c,d) FTIR spectra in the regions of 3700–2700 cm⁻¹ and (e,f) 1800–1000 cm⁻¹.

Hierarchical clustering analysis (HCA) tree diagrams for the data obtained from the (a,b) Raman, and (c,d) FTIR spectra in the regions of 3700–2700 cm⁻¹ and (e,f) 1800–1000 cm⁻¹.