TY  - BOOK
AU  - Gowar, John
TI  - Optical Communication Systems 
SN  - 08769247810
U1  - 621.3827 
PY  - 1989///
CY  - New Delhi : 
PB  - Prentice-Hall of India, 
KW  - Optical Communications
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-87692-478-10.pdf
ER  -