TY  - BOOK
AU  - Murphy, Stuart J.
TI  - Elevator magic
SN  - 0-04-446709-0
AV  - TR 513.2'12 M95 1997
PY  - 1997///
CY  - New York
PB  - Harper Collins
KW  - Subtraction
KW  - Juvenile literature
N2  - Explains the concept of subtraction through a rhyming text about a descending elevator
ER  -