The Mysterious Planet

From Author Wars - https://authorwars.com/publications/the-mysterious-planet-10450.html

Overview:

Title: The Mysterious Planet
Author: Terrance Dicks
Year: 1988
ISBN-10: 0426203194
Publisher: Target / W. H. Allen
Price: £1.99
Pages: 127
Binding: Paperback
Type: Novel
Title Reference: The Mysterious Planet
Notes:
• Although the title includes 'The' on the front cover and spine of the book, inside it is simply Doctor Who - Mysterious Planet.
• Prices on back cover: UK £1.99, USA $3.95, Canada $6.95, NZ $8.99, Australia $4.95