1-4 of 4 Books
Data communications
Data communications
By United States. Air Traffic Service.
List of teletype call letters and designators, revised, effective April 15, 1938
List of teletype call letters and designators, revised, effective April 15, 1938
By United States. Bureau of Air Commerce.
Data communications
Data communications
By United States. Air Traffic Operations Service.
Error correction for deep space network teletype circuits
Error correction for deep space network teletype circuits
By Harold Fredricksen