COLLINS, A. FREDERICK.
The radio amateur handbook, a complete and practical guide. Revised by E. L. Bragdon. 8th ed.
COLLINS, A. FREDERICK. The radio amateur handbook, a complete and practical guide. Revised by E. L. Bragdon. 8th ed. © 30Aug40; A147500. Thomas Y. Crowell Co. (PWH); 5Dec67; R423418.
Thomas Y. Crowell Co.|PWH