Grandpa's amazing computer / by Ursel Scheffler ; illustrated by Ruth Scholte van Mast ; translated by Rosemary Lanning.

Thinking that his grandfather doesn't know anything about computers, ten-year-old Ollie is amazed when the old gentleman claims to have one of the world's oldest ones lying around somewhere.

Bibliographic Details

Online Access:	Full Text (via Internet Archive)
Main Author:	Scheffler, Ursel
Other Authors:	Scholte van Mast, Ruth (Illustrator), Lanning, Rosemary
Other title:	Opus Computer-Geheimnis. English.
Format:	eBook
Language:	English German
Published:	New York : North-South Books, c1997.