United States air transportation system : routes permanently certified, September 30, 1953 /
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| Corporate author / creator: | United States. Civil Aeronautics Board |
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| Imprint: | [Washington, D.C.] : U.S. Government Printing Office, 1953. |
| Description: | 1 map ; 56 x 87 cm. |
| Language: | English |
| Subject: | Airlines -- United States -- Maps. Airways -- United States -- Maps. Airlines. Airways. United States. Maps. |
| Cartographic data: | Scale not given. |
| Format: | Map E-Resource U.S. Federal Government Document Print |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/4451344 |
| Physical Description: | Scale not given. 1 map ; 56 x 87 cm. |
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