Columbia subject headings:
Color centers.
Holes (Electron deficiencies)
Luminescence.
Mineralogy, Determinative.
Spectrum analysis.
Harvard subject headings:
Color centers.
Holes (Electron deficiencies)
Luminescence.
Mineralogy, Determinative
Spectrum analysis
Princeton subject headings:
Color centers.
Holes (Electron deficiencies)
Luminescence.
Mineralogy, Determinative.
Spectrum analysis.