Study of satellite frequency requirements for the U.S. Postal Service electronic mail system
By: by Peter M. McManamon ... [et al.]
Contributors: United States. Dept. of Commerce. Office of Telecommunications
Series: OT report -- 74-27
Publisher: Office of Telecommunications
Published: 1974
Place of publication: [Washington]
Language: eng
Subjects: Postal service -- United States -- Automation; Artificial satellites in telecommunication; Radio frequency allocation -- United States