TY  - BOOK
AU  - Gerlach, Christian,
TI  - Extremely violent societies: mass violence in the twentieth-century world 
SN  - 9780521880589 (hardback)
AV  - HM886 .G46 2010
PY  - 2010///
CY  - Cambridge, New York
PB  - Cambridge University Press
N1  - Includes bibliographical references and index
ER  -