Norby and Yobo's Great Adventure

From Author Wars - https://authorwars.com/publications/norby-and-yobos-great-adventure-854407.html

Overview:

Title: Norby and Yobo's Great Adventure
Author: Isaac Asimov, Janet Asimov
Year: 1989
ISBN-10: 0802768946
Publisher: Walker & Co.
Price: $13.85
Pages: 100
Binding: Hardcover
Type: Novel
Title Reference: Norby and Yobo's Great Adventure
Notes: Library binding First printing with full number line. Cover artist on back flap of Archive.org copy.