TY  - BOOK
AU  - BARCLAY,Sue
AU  - Colin Brown
AU  - Martin Bronkhurst
AU  - Richard Berridge
TI  - Machines At Work 15: : Young Scientist 15
SN  - 0-7166-6303-1
U1  - 032. 
PY  - 1990///
CY  - London
PB  - World Book International
KW  - 0
KW  - Grade 7-9
ER  -