TY  - BOOK
ED  - United States.
TI  - Electrical instruments and telephones of the U.S. Signal corps
T2  - Its  Manual
AV  - UG590 .U63 1910
PY  - 1911///
CY  - Washington
PB  - Govt. print. off.
KW  - Military telegraph
KW  - United States
KW  - Military telephone
N1  - "War department. Document no. 378. Office of the Chief signal officer of the army."
ER  -