TY  - BOOK
AU  - Melo,Corazon F.
AU  - Pagaduan,Leandro
AU  - Cruz,Milagros
TI  - Basic Mathematical concepts
U1  - Fil. 510 M528 1980 
PY  - 1980///
CY  - Quezon City
PB  - Katha Publishing Co., Inc.
KW  - Mathematical concepts
ER  -