TY  - BOOK
AU  - Griffiths,A.L.
TI  - Seven a day
T2  - Mathematics counts
SN  - 0050039245
PY  - 1997///
CY  - London
PB  - Oliver & Boyd
KW  - Mathematics
KW  - Numbers
N1  - Number -- money -- lenght -- mass -- capacity -- time
ER  -