TY  - BOOK
AU  - Gerlach Christian
TI  - Extremely violent societies:Mass violence in the twentieth century world
SN  - 9780521706810
AV  - HM 886  .G47 2010
PY  - 2010///
CY  - New york
PB  - Cambridge University Press
KW  - Violence
KW  - History
KW  - 20th century
KW  - Social aspects
ER  -