TY  - BOOK
AU  - Obra, Leodencio T.
AU  - Reny C.Obra
TI  - Basic biology
SN  - 9716213409
PY  - 2004///
CY  - Quezon City
PB  - St. Bernadette Publishing House Corp
KW  - Biology
KW  - sears
N1  - Includes references (p.507)
ER  -