TY  - BOOK
AU  - Squier,George Owen
ED  - United States.
TI  - Multiplex telephony and telegraphy,: by means of electric waves guided by wires
T2  - Professional paper of the Signal Corps, U.S. Army
AV  - TK6421 .S8
PY  - 1911///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Telephone
KW  - Telegraph
N1  - On verso of t.-p.:  War Department.  Document no. 390
ER  -