TY  - BOOK
AU  - Gowar, John 
TI  - Optical communication systems 
SN  - 81-203-0834-4 
U1  - 621.382 7 GOW  
PY  - 2000///
CY  - Prentice hall of india 
PB  - New Delhi 
KW  - OPTICAL COMMUNICATION
ER  -