The color of amethyst, rose, and blue varieties of quartz
Watson, Thomas L. (Thomas Leonard), 1871-1924 Beard, R. E.
Article
1917
Proceedings of the United States National Museum
53
Issue: 2220
553--563
BioStor
English
Washington Smithsonian Institution Press, [etc.]
BioStor: https://biostor.org/reference/79497 DOI: https://doi.org/10.5479/si.00963801.2220.553
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