TY  - BOOK
AU  - 
AU  - 
TI  - Understanding Biology for advanced level
SN  -  9780748739578
U1  - 574 TOO 
PY  - 1999///
CY  - U.K
PB  - Nelson Thornes , 
KW  -  
KW  - Biology--Study and teaching (Secondary)
KW  - Biology
N1  - Includes bibliographical references and index
ER  -