TY  - BOOK
AU  - Mathur B K
AU  - Mathur B K
TI  - Principles of optics
SN  - SL00859650
U1  - C5:1, K4 
PY  - 1964///
CY  - Kanpur
PB  - Gopal printing      
KW  -  Light
KW  -  Optics
KW  - Physics
N1  - Appendix A-H 778-826p
ER  -