TY  - BOOK
AU  - Guevarra, Eugene
AU  - Puro, Lucy
AU  - Reyes, Victor
AU  - Sy Tan, Josephine L.
TI  - 21st century mathematics: : a vision for a better future grade 9
SN  - 978-971-06-3546-7
U1  - Fil. 510 C395 2014 
PY  - 2014///
CY  - Quezon City
PB  - Phoenix Publishing House, Inc.
KW  - Mathematics
ER  -