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Journal of Spectroscopy
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Journal of Spectroscopy
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2018
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Article
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Fig 1
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Research Article
Characterization and Identification of Coal and Carbonaceous Shale Using Visible and Near-Infrared Reflectance Spectroscopy
Figure 1
Six typical bituminite (a–c) and carbonaceous shale (d–f) samples of China.
(a)
(b)
(c)
(d)
(e)
(f)