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- catalog contributor b7630347.
- catalog created "1943-".
- catalog date "1943".
- catalog date "1943-".
- catalog dateCopyrighted "1943-".
- catalog description "Nos. 1- prepared by Air Traffic Control Division, Office Federal Airways.".
- catalog extent "5 v. in 1 v.".
- catalog issued "1943".
- catalog issued "1943-".
- catalog language "eng".
- catalog publisher "[Washington]".
- catalog subject "Air traffic control.".
- catalog title "Study of air traffic control.".
- catalog type "text".