TY  - SER
AU  - Ghosh,A.K..
TI  - Journal of optics (1990) / 
U1  - 535.05 
PY  - 1990///
CY  - Kolkata : 
PB  - The Optical Society of India , 
KW  - OPTICS
N1  - Library has :  V.19, no.1-2 & 4,1990; NULL
ER  -