"Presents the science behind building and defending castles including the use of simple machines, such as pulleys and levers"--Provided by publisher.
- ISBN10 142963118X
- ISBN13 9781429631181
- Publish Date 1 March 2009 (first published 1 January 2009)
- Publish Status Out of Print
- Out of Print 23 July 2021
- Publish Country US
- Imprint Capstone Press
- Format Hardcover (Library Binding)
- Pages 32
- Language English