TY  - BOOK
AU  - Buenaventura, Lorna B.
TI  - Frontiers : : worktext in world history 
SN  - 978-971-23-5200-3.
U1  - Fil. 909 B928f 2009 .--First Edition.
PY  - 2009///
CY  - Manila, Philippines
PB  -  Rex Book Store, 
N1  - Includes glossary and index
ER  -