How to catapult a castle: machines that brought down the battlements
"Winter, James De"
How to catapult a castle: machines that brought down the battlements - Minnesota Capstone Press 2008 - 32 - Fact finders Extreme .
"Presents the science behind building and defending castles including the use of simple machines, such as pulleys and levers"--Provided by publisher
9781429631181
000 / EXT
How to catapult a castle: machines that brought down the battlements - Minnesota Capstone Press 2008 - 32 - Fact finders Extreme .
"Presents the science behind building and defending castles including the use of simple machines, such as pulleys and levers"--Provided by publisher
9781429631181
000 / EXT