TY  - BOOK
AU  - Penecilla,Gerard L.
TI  - Basic concepts in biology
SN  - 9714203341
U1  - 574.07 
PY  - 2003///
CY  - Meycauayan , Bulacan
PB  - Trinitas Publishing
KW  - Biology
KW  - Study and teaching
ER  -