TY  - BOOK
AU  - Butcher,Lesley
TI  - Nelson modular science 
SN  - 978 0 7487 6793 9
U1  - 507 6 BUT 
PY  - 2002///
CY  - cheltenham 
PB  -  Nelson Thornes
KW  - MODULAR SCIENCE STUDY AND TEACHING
ER  -