4505603
9780802768940
Norby, the robot, time travels to help Admiral Yobo of Mars to trace his family roots. Part of a series that also includes Norby Down to Earth (1989).Asimov, Janet is the author of 'Norby and Yobo's Great Adventure (Norby Series #8) - Janet Asimov - Library Binding' with ISBN 9780802768940 and ISBN 0802768946.
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