TY  - BOOK
AU  - Butterfield, Moira
TI  - Learning clock
SN  - 9780760719169
U1  - 372.7 LEA 
PY  - 2000///
CY  - [S.l
PB  - Barnes & Noble/Teeney Books]
KW  - Mathematics
N1  - On board pages. Cover title
ER  -