TY  - BOOK
AU  - Duiker,William J.
AU  - Spielvogel,Jackson J.
TI  - History of the world / :  
SN  - 9789814510936
U1  - 909 Seventh edition. 
PY  - 2013///
CY  - Pasig City: 
PB  - Cengage Learning Asia Pte Ltd , 
KW  - World history.
KW  - Civilization
KW  - Geography.
N1  - includes glossary, documents, map credits, chapter notes, and index
ER  -