TY  - BOOK
AU  - Basic Science Series, 
TI  - Lights - 6
U1  - 535 
PY  - 1900///
CY  - Kottayam
PB  - NATIONAL BOOKSTALL
KW  - General stack
KW  - Natural science & Mathematics
KW  - Physics
KW  - Light & infrared & ultraviolet PhenomenaGeneralia
ER  -