TY  - BOOK
AU  - Jolley, E H
TI  - Introduction to Telephony and Telegraphy
SN  - 8185614369
U1  - 621.385 JOL 
PY  - 1997///
CY  - New Delhi
PB  - :Wheeler Publishing 
KW  - Applied physics
KW  - Telephone
KW  - Telegraph
KW  - E H Jolley
KW  - and Introduction to telephony and telegraphy
ER  -