TY  - GEN
AU  - Longhurst , R.S.  
TI  - Geometrical and physical optics
SN  - 0002090570
U1  - 535.32 
PY  - 1973///
CY  - Hyderbad
PB  - Orient Longman
KW  - Geometrical Optics
KW  - Physical Optics
ER  -