TY  - BOOK
AU  - Tignor, Robert.
TI  - Worlds Together, Worlds Apart :A History of the World from the Beginnings of humankind to the Present /Robert Tignor, [et.al.]
SN  - 9780393925470
U1  - 909WOR 
PY  - 2008///
CY  - New York
PB  - W.W.Norton & Company
ER  -