TY  - BOOK
AU  - BARCLAY,Sue
AU  - David Cook
AU  - Jeremy Gower
AU  - Richard Deverell
TI  - Investigating Light 12: : Young Scientist 12 
SN  - 0-7166-6303-1
U1  - 032. 
PY  - 1994///
CY  - London
PB  - World Book International
KW  - 0
KW  - Grade 7-9
ER  -