TY  - BOOK
AU  - Nivera, Gladys C.
TI  - Elementary algebra I : patterns and practicalities / 
SN  - 9789715226387
U1  - Fil. 512 N735e 2007 
PY  - 2007///
CY  - Makati City, Philippines : 
PB  - Don Bosco Press, 
ER  -