Fig. 3
Raman spectra of the ground layer in the cross-section of samples PCH02, PCH03, PCH04, and PCH07. Asterisk indicates signal of the poly(methyl methacrylate) resin
Fig. 3 | Heritage Science
Raman spectra of the ground layer in the cross-section of samples PCH02, PCH03, PCH04, and PCH07. Asterisk indicates signal of the poly(methyl methacrylate) resin
