AU  - OXLADE,CHRIS
TI  - LIGHT & SOUND
T2  - SCIENCE TOPICS
SN  - 0431076707
U1  - 534/OXL 
PY  - 1999///
CY  - LONDON
PB  - HEINEMANN LIBRARY
KW  - PHYSICS
KW  - LIGHT
KW  - SOUND
ER  -