ebrary, Inc. (1997). Aging of U.S. Air Force aircraft: Final report. National Academy Press.
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Chicago-čujuhus (17. p.)
ebrary, Inc. Aging of U.S. Air Force Aircraft: Final Report. Washington, D.C.: National Academy Press, 1997.
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MLA-čujuhus (9. p.)
ebrary, Inc. Aging of U.S. Air Force Aircraft: Final Report. National Academy Press, 1997.
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