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Google圖書搜尋
The Story of the Winged S. The Autobiography of Igor I. Sikorsky. With Many Illustrations from the Author's Collection of Photographs
Igor Ivan Sikorsky
出版
London
, 1939
URL
http://books.google.com.hk/books?id=t8gBMwEACAAJ&hl=&source=gbs_api