TY  - BOOK
AU  - "Seng, Teh Keng","Etherton, Alan","Clegg, Jackie","Kwan, Lam Peng"
TI  - Practical Biology for o level
SN  - 981-01-7162-5
U1  - 570 
PY  - 1994///
PB  - oxford Press,,Nelson,Redspot,collins,Marshalk Cavendish,Federal
ER  -