United States air transportation system, routes certificated to local service carriers : March 31, 1974.
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| Corporate author / creator: | United States. Civil Aeronautics Board. Office of Facilities and Operations. |
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| Imprint: | [Washington, D.C. : The Board, 1974] |
| Description: | 1 map ; on sheet 44 x 56 cm. |
| Language: | English |
| Subject: | Local service airlines -- United States -- Maps. Airways -- United States -- Maps. Airways. Local service airlines. United States. Maps. |
| Cartographic data: | Scale [ca. 1:9,000,000]. (W 125⁰--W 67⁰/N 50⁰--N 24⁰). |
| Format: | Map U.S. Federal Government Document Print |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/6234404 |
| Item Description: | Includes air carrier list, notes, and table of helicopter routes not shown on map. |
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| Physical Description: | Scale [ca. 1:9,000,000]. (W 125⁰--W 67⁰/N 50⁰--N 24⁰). 1 map ; on sheet 44 x 56 cm. |