TY  - BOOK
AU  - Kleinav,Karl-Henz
AU  - Somasundaran,K.
TI  - Telephone Practisthapanam
U1  - 621.386 
PY  - 1973///
CY  - Trivandram
PB  - State Institue Of Language
KW  - Telegraph, Wireless
KW  - History
ER  -