TY  - BOOK
AU  - Heylings, M. R.
TI  - Revision of topics for GCSE: Graded examples in mathematics
SN  - 072172339X
U1  - 510HEY 21
PY  - 1987///
CY  - Huddersfield
PB  - Schofield & Sims ltd
KW  - Mathematics
ER  -