TY  - BOOK
AU  - Orians Gordon H
AU  - Heller H Craig
AU  - Purves William K
TI  - Life: : The science of Biology  
SN  - 0716726297
U1  - 574/ P L  21
PY  - 1987///
CY  - New York
PB  - Sinauer Associates Inc
KW  - Biology
KW  - science of biology
KW  - علم الاحياء
ER  -