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- Corporate/Agency Authors:
- Air Traffic Service and Federal Aviation Agency
- Publisher:
- Air Traffic Service
- Date:
- [1961.]
- SuDoc number:
- FAA 3.8:F 11/961
- Corporate/Agency Authors:
- Air Traffic Service and Transportation Dept.
- Publisher:
- Air Traffic Service
- Date:
- [July 3, 1960.]
- SuDoc number:
- TD 4.308:T 27/ch.9