TY  - BOOK
AU  - Somerville,Bob
AU  - Thompson,John
TI  - Eyewitness to history: from ancient times to the modern era 
SN  - 9781426206528
PY  - 2011///
CY  - Washington, D.C.
PB  - National Geographic Society
KW  - World history
KW  - Sources
KW  - Civilization
KW  - History
N1  - Includes bibliographical references (p. 451) and index
ER  -