TY  - GEN
AU  - Roy Navkala
TI  - Telephone : How it works
SN  - 9788170113164
U1  - 621.385 R8121t 
PY  - 1987///
CY  - New Delhi 
PB  - Children book trust 
KW  - Telelphone
KW  - Children book
ER  -