TY  - BOOK
AU  - Hubbard,Geoffrey
TI  - Cooke and wheatstone and the invention of the electric telegraph
U1  - 621.38209 
PY  - 1965///
CY  - London
PB  - Routledge and Kegan Paul
KW  - Telegraph
KW  - Communication and traffic
KW  - Telecommunication
N1  - Includes index
ER  -