TY  - GEN
AU  - Porter , Alison ;ed.
AU  - Davies , Eryl ;ed.
TI  - How things work
SN  - 0783591241
U1  - 621.8 
PY  - 1997///
CY  - Sydney
PB  - Time Warner
KW  - MACHINE ENGINEERING
KW  - ENGINEERING
ER  -