Fig. 6From: Exploratory investigation of historical decorative laminates by means of vibrational spectroscopic techniquesOptical images of samples with the numbering of the visually identifiable layers: a DL06, b DL09, c DL12, d DL15, e DL16, f DL18, g DL20, h DL22, i DL24 with labelled layersBack to article page