Age study of the flying public

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110 1 ‡aUnited States. ‡bCivil Aeronautics Administration.
245 1 0 ‡aAge study of the flying public.
260 ‡a[Washington, ‡c1947?]
300 ‡a10 p. ‡btables. ‡c23 cm.
500 ‡aCover title.
538 ‡aMode of access: Internet.
650 0 ‡aAir pilots ‡zUnited States
CID ‡a001525318
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DAT 1 ‡a20210929183102.0 ‡b2024-03-30T17:39:22Z
DAT 2 ‡a2024-03-30T17:30:02Z ‡b2019-09-29T20:00:02Z
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