TY  - BOOK
AU  - AYYER (K S Mandalam)
AU  - NARAYANAMURTI (M)
TI  - Text book of light
U1  - 534/63 
PY  - 1953///
CY  - Madras
PB  - S Viswanathan Pvt. Ltd.
KW  - Text
KW  - light
KW  - book
ER  -