Corundum
An Illustrated Dictionary of Words Used In Art and Archealogy. · 1883 · p. 11
The Indian name for a very hard mineral called adamantine spar. The ruby and sapphire are varieties of corundum.
Bu kavram başka kaynaklarda da geçiyor
Adair's New Encyclopedia (1923)
The American Illustrated Medical Dictionary (1913)
Webster's Condensed Dictionary- A Condensed Dictionary of the English Language (1909)
Chamber's Twientieth Century Dictionary (1908)
Chandler's Encyclopedia (1898)
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
Zell's Condensed Dictionary (1879)
Dictionary of Science, Literature and Art (1854)
Dictionary of Science, Literature and Art (1842)
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