Bob Fulton's terrific time machine : an adventure in space and time /

When a young boy's invention turns out to be a machine that transports him in time, he follows his friend 900 years back in time, then 900 years into the future. But can they get back?

Bibliographic Details

Main Author:	Beatty, Jerome, Jr
Format:	Book
Language:	English
Published:	Toronto, New York : Bantam, [1982]
Subjects:	Science fiction.