TY  - BOOK
AU  - Gurstelle,William
TI  - The art of the catapult: build Greek ballistae, Roman onagers, English trebuchets, and more ancient artillery 
SN  - 1556525265
AV  - U875 .G87 2004
U1  - 623.4/41 22
CY  - Chicago, Ill.
PB  - Chicago Review Press
KW  - Catapult
KW  - History
KW  - Ballista
KW  - Design and construction
N1  - Includes bibliographical references (p. 167-168) and index
UR  - http://www.loc.gov/catdir/enhancements/fy0616/2004004866-b.html
UR  - http://www.loc.gov/catdir/enhancements/fy0616/2004004866-d.html
ER  -