ballooning
A Dictionary of Aviation · 1911 · p. 6
bo’tou-nin n. the art, practis, or sport of ascending tn or managing balloons; aeronautrces; aerostation.
Bu kavram başka kaynaklarda da geçiyor
The American Dictionary and Cyclopedia (1910)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
Smith's Financial Dictionary (1903)
An Illustrated Encyclopaedic Medical Dictionary (1891)
Nuttall's Standard Dictionary of the English Language (1890)
ballooning-school
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A Dictionary of Aviation (1911)
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