TY  - BOOK
AU  - Marland,E.A.
TI  - Early electrical communication
U1  - 621.382 23
PY  - 1964///
CY  - London
PB  - Abelard-Schuman
KW  - electronic  communication
KW  - Telegraph
KW  - History
KW  - Electro-acoustics
N1  - Bibliography and index
ER  -