TY  - BOOK
AU  - Sadler,Wendy
TI  - Toys with springs
T2  - How Do They Work
SN  - 0431049688
PY  - 2005///
CY  - Oxford
PB  - Heinemann Library
KW  - Mechanical toys
KW  - Design and costruction
KW  - Juvenile Literature
KW  - sears
KW  - Springs (Mechanism)
N1  - Includes index
ER  -