Tác giả: John B. Rathbun

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Chapter IV. In …

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Many aeronautical books of a purely descriptive nature have been written for the average man, but as a rule they contain little of interest for the more serious student of the subject. Other books of …