Radio Communication Laws of the United States and the International Radiotelegraphic Convention. Regulations Governing Radio Operators and the Use of Radio Apparatus on ships and on Land. Edititon Aug. 15, 1919
Department of Commerce. Bureau of Navigation. Radio Service
From Archway Books, Mana, New Zealand
Seller rating 5 out of 5 stars
AbeBooks Seller since 17 March 2004