De Winter, James. <br/><br/>
How to catapult a castle :  machines that brought down the battlements / 
 Catapult a castle 
James de Winter. 
 - Mankato, Minn. :  Capstone Press,  2008. 
 - 32 p. :  col. ill. ;  22 cm. 
 - Fact finders. Extreme! .
 - Fact finders.  Extreme! .
<br/><br/>Includes bibliographical references (p. 31), filmography (p. 31), and index. 
<br/><br/> Presents the science behind building and defending castles including the use of simple machines, such as pulleys and levers. 
<br/><br/> 5.1  Follett Library Resources  3-6  Follett Library Resources 
<br/><br/><label>ISBN: </label>9781429631181 (lib. bdg.) 142963118X (lib. bdg.) 9781429631389 (pbk.) 1429631384 (pbk.) 
<br/><br/><label>LCCN: </label>2008023568 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Siege warfare--Juvenile literature.<br/>Siege warfare.<br/>Military art and science.<br/>Siege warfare.<br/>Military art and science.
<br/><br/><label>LC Class. No.: </label>UG444  / .W56 2008 
<br/><br/><label>Dewey Class. No.: </label>623.4/41