The safety and special radio services
Subtitle: a public primer about the nonbroadcast radio services, devoted to aviation, marine, public safety, land transportation, industry, science, medical, and the individual--to the inclusion of amateur, citizens, and commercial radio operators--and reference to public radiocommunication services.
Published: 1950
Place of publication: [Washington]
Language: eng
Number of pages: 37
Subjects: Radio -- United States.