TY  - BOOK
AU  - Spiers,Antony
AU  - Stebbens,Derek
TI  - Chemistry by concept: a comprehensive account of the princiles of GCE'O' leval and CSE courses 
SN  - 0435648306
PY  - 1973///
CY  - London
PB  - Heinemann Educational Books
KW  - Chemistry
ER  -