TY  - BOOK
AU  - Pope, Frank Leonard
TI  - Modern practice of the electric telegraph a handbook for electricians and operators
AV  - TK5263 P86 1877
PY  - 1877///
CY  - New York
PB  - D. Van Nostrand
KW  - Telégrafo
KW  - Operadores manuales
ER  -