TY  - BOOK
AU  - Tizon, Lydia
TI  - Math builders: second year 
SN  - 9789716552867
AV  - QA 135.5 .T625 2007
U1  - HS 510  
PY  - 2007///
CY  - Valenzuela City
PB  - Mega-Jesta Prints, Inc.
KW  - Math
KW  - study and teaching
ER  -