TY  - BOOK
AU  - Keeley,Lawrence H.
TI  - War before civilization
SN  - 0-19-509112-4
PY  - 1996///
CY  - New York
PB  - Oxford University Press
KW  - Fortification, Prehistoric
KW  - Warfare, Prehistoric
KW  - Weapons, Prehistoric
ER  -