BTS / MONO B-1118
O'Leary,J T,Blessing,E C
AN IMPROVED THREE-CHANNEL CARRIER TELEPHONE SYSTEM
/
.- , 1939
.- 27 .
Bound With Bts Mono B-1100-1117,1119-1139.Lack No-1117,1119,1121,1124,1131.
Author Added Entry:
Beyer,J W;
Copy Details:
Acc. No.: TR17365, Full Call No.: BTS MONO B-1118, Item type: Technical Report , Location: General Stacks,
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