TY  - BOOK
AU  - Jolley , E. H. 
TI  - Introduction to telephony and telegraphy 
SN  - 8185614369 (hb)
U1  - 621.385 
PY  - 1994///
CY  - Allahabad 
PB  - Wheeler Publishing 
KW  - Telephone
KW  - Telephone services
KW  - Electric telegraph
KW  - Circuit components
KW  - Telephone instruments
KW  - Switching systems
KW  - Transmission methods
KW  - Telegraph
KW  - FEAS
N1  - Includes index
ER  -