Georama
The Optical Dictionary · 1904 · p. 8
A large spherical chamber on the interior surface of which a complete THE OPTICA view of the earth’s surface is depicted.
Bu kavram başka kaynaklarda da geçiyor
The American Dictionary and Cyclopedia (1910)
Chamber's Twientieth Century Dictionary (1908)
Dictionary of Science, Literature and Art (1842)
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