United States air transportation system : routes permanently certificated, September 30, 1955 /

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Bibliographic Details
Corporate author / creator:United States. Civil Aeronautics Board
Imprint:[Washington, D.C.] : Civil Aeronautics Board, Bureau of Air Operations, Routes and Carrier Relations Division, 1955.
Description:1 map ; 36 x 51 cm
Subject:Airlines -- United States -- Maps.
Airways -- United States -- Maps.
United States.
Cartographic data:Scale [ca. 1:10,000,000].
Format: Map U.S. Federal Government Document Print
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/6251330
Hidden Bibliographic Details
Govt.docs classification:C 31.217:T 68/2/955

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