TY  - BOOK
AU  - Winter, James De
AU  - Nang Chan Yeema
TI  - How to Catapult a Castle
SN  - 1-4296-3118-X
U1  - JN 500 CAP 
PY  - 2008///
CY  - Mankato, MN USA
PB  - Capstone Publishers Company
KW  - Juvenile Nonfiction
N2  - Presents the science behind building and defending castles including the use of simple machines, such as pulleys and levers
ER  -