COLLINS, ARCHIE FREDERICK.
The radio amateur's hand book. 4th ed., rev. by George C. Baxter Rowe. NM: new matter, p. 393-406.
COLLINS, ARCHIE FREDERICK. The radio amateur's hand book. 4th ed., rev. by George C. Baxter Rowe. NM: new matter, p. 393-406. © 2Feb26; A879494. Thomas Y. Crowell Co. (PWH); 20Jan54; R124263.
Thomas Y. Crowell Co.|PWH