TY  - BOOK
AU  - Simpkins,J.
AU  - Williams,J.I
TI  - Advanced biology,
SN  - 0003222764
U1  - 574 
PY  - 1989///
CY  - London
PB  - Collins Educational
KW  - Biology
KW  - Organisms
KW  - Biology of cell
ER  -