TY  - BOOK
AU  - KHURANA, A.K.
TI  - THEORY AND PRACTICE OF OPTICS AND REFRACTION
SN  - NULL
U1  - 617.7/KHU 
PY  - 2001///
CY  - NEW DELHI
PB  - ELSEVIER
KW  - THEORY AND PRACTICE OF OPTICS AND REFRACTION
ER  -