Campbell, Duncan B. <br/><br/>
Greek and Roman artillery 399 Bc-AD 363 / 
by Duncan B. Campbell. 
 - England :  Osprey,  c2003. 
 - 48 p. :  ill., col.(some ;  24 cm. 
 - New vanguard  89 .
 - New vanguard  89 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1841766348 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Siege artillery--History.--Greece<br/>Siege artillery--History.--Rome