TY  - BOOK
AU  - Parke, Steve ., ed. 
AU  - Vaughan, Jenny., ed.
TI  - Science Encyclopedia: matter and chemicals; energy, motion and machines electricity and magnetism; sound and light; space and time; science experiments
SN  - 075253209X
U1  - 500 
PY  - 1999///
CY  - Bardfield
PB  - Parragon
KW  - Science
N1  - Glossary & Index available
ER  -