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B Fact - Reflectance spectra, chemical tests, laser-microprobe Raman spectra, pyrolysis mass
Reflectance spectra, chemical tests, laser-microprobe Raman spectra, pyrolysis mass spectrometry, and x-ray fluorescence all show that the image is not painted with any of the expected, historically-documented pigments (Schwalbe 1982; Morris 1980; Heller 1981, Mottern 1979).
Bibliography for Facts Pages
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