TY  - BOOK
AU  - Catchillar, Gerry C.
TI  - Biology: : a simplified approach 
SN  - 971-08-6611-7
AV  - 570 C28b 2011 
PY  - 2006///
CY  - Mandaluyong City
PB  - National Book Store
KW  - Biology
N1  - Includes bibliography
ER  -