Radium
A Dictionary of Scientific Terms · 1927 · p. 3
A metallic element. Symbol: Ra.
Bu kavram başka kaynaklarda da geçiyor
French-English Dictionary of Military Terms (1918)
Hawkins' Electrical Dictionary (1915)
The American Illustrated Medical Dictionary (1913)
The Devil's Dictionary (1911)
Jack's Reference Book for Home and Office : An Encyclopaedia of General Information: Medical Dictionary (1909)
Jack's Reference Book for Home and Office : An Encyclopaedia of General Information: General Information (1909)
Foolish Dictionary (1904)
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