TY  - BOOK
AU  - Llewellyn,S.
AU  - Greer,A.
ED  - Stanley Thornes
TI  - Mathematics: the basic skills 
SN  - 0859507181
U1  - 510 23
PY  - 1990///.
CY  - Cheltenham: 
PB  - Stanley Thornes, 
KW  - Mathematics
N1  - Includes index
ER  -