Prussian
Nuttall's Standard Dictionary of the English Language · 1890 · p. 144
blue, prush'-e-an-bloo, s. a salt of iron, of a beautiful deep blue, much used as a pigment.
Bu kavram başka kaynaklarda da geçiyor
Chamber's Twientieth Century Dictionary (1908)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
The Treasury of Languages (1866)
Franco-Prussian
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Pears Shilling Cyclopedia (1898)
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