The Usborne pocket calculator book
Lewis, John, 1941-
The Usborne pocket calculator book edited by Helen Davis John Lewis - London Usborne 1982 - 48 p. ill.(some col.) 24cm - Usborne electronics .
Calculating-machine--Juvenile literature
510 / .28
The Usborne pocket calculator book edited by Helen Davis John Lewis - London Usborne 1982 - 48 p. ill.(some col.) 24cm - Usborne electronics .
Calculating-machine--Juvenile literature
510 / .28