backbone
Appleton's Medical Dictionary · 1913 · p. 3
The c. formed by the vertebrae joined together in their natural relations. [B. N. A., columnae vertebral is.1
Bu kavram başka kaynaklarda da geçiyor
A Dictionary of Aviation (1911)
The American Dictionary and Cyclopedia (1910)
Chamber's Etymological of the English Language (1895)
An Illustrated Encyclopaedic Medical Dictionary (1891)
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