TY  - GEN
AU  - Toole, Glenn 
AU  - Toole, Susan 
TI  - understanding biology : for advanced level 
SN  - 0748717188
U1  - 574 
PY  - 1987///
CY  - Cheltenham
PB  - Stanley Thornes Publishers
KW  - LIFE SCIENCES BIOLOGY
ER  -