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Google圖書搜尋
United States of America AIP, Aeronautical Information Publication
出版
Department of Transportation, Federal Aviation Administration, Air Traffic Service, Operations Division, National Flight Data Center
, 1981
URL
http://books.google.com.hk/books?id=8azR0uaKe_cC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN