
by Janet Asimov, Isaac Asimov · Molino · tapa blanda · ISBN 9788427265028

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Jeff and Norby, the robot, must outwit radicals from the Inventor's Union who plot to steal the robot to learn his secrets. Their journey leads them to the dragon-inhabited planet Jamya, where they discover the key to an even more precious secret.

Janet Opal Asimov, usually writing as J. O. Jeppson, was an American science fiction writer, psychiatrist, and psychoanalyst.
