TY  - BOOK
TI  - Child Craft Vol - 9: Science at Work
SN  - 9780716660118
U1  - 745.5 
PY  - 1996///
CY  - London
PB  - World Book International
KW  - General
N1  - Tools and machines at work Making use of metals Raw materials Machines in the home On the move Words, sounds, pictures and signals The world of engineering Sources of power Processed materials Inventions and the future
ER  -