TY  - BOOK
AU  - Gupta; S.K.Verma;O.P.,Goyal;V.N.
TI  - Waves and optics
SN  - 81-8045-013-9
U1  - 535 G93W 
PY  - 2004///
CY  - New Delhi
PB  - R. Chand 
KW  - Physics
ER  -