TY  - BOOK
AU  - BROOKS,Philip
AU  - John Birdsall
TI  - How Things Work : Questions And Answers
SN  - 0-7534-0798-1
U1  - 500.3 
PY  - 2001///
CY  - London
PB  - Kingfisher Publications
KW  - 0
KW  - Grade 7-9
ER  -