TY  - BOOK
AU  - Ghatak Ajoy
AU  - Ghatak Ajoy
TI  - Optics
SN  - SL01444686
U1  - C5, N8;P9;4;7 
PY  - 2009///
CY  - New Delhi
PB  -  Tata mcgraw hill india   
ER  -