Hill, Donald Routledge.
A history of engineering in classical and medieval times /
Donald Hill 
. - London : New York : Routledge,  1997 
. - 263 p.  ill., map.  21 cm. 
<br/>К.: Бібліогр. : c. 248-253, Index 
<br/><label>  ISBN: </label>0-415-15291-7