TY  - BOOK
AU  - Mathur B.K
TI  - Principles of Optics
SN  - 0000021439
U1  - 535.2 
PY  - 1962///
CY  - Kanpur
PB  - Gopal Printing Press
KW  -  Principles
KW  - Optics
KW  - Optics(535.2)
ER  -