TY  - BOOK
AU  - Hafalla, Juliana R.
AU  - Sarabia, Juliet C.; Sangel, Marites B.
TI  - Essentials of biological sciences modules : : a scientific inquiry approach 
SN  - 971-678-012-5
AV  - 570.711 H11e 
PY  - 2005///
CY  - Manila
PB  - FEU Publications
ER  -