Testing Limits

From Author Wars - https://authorwars.com/publications/testing-limits-78501.html

Overview:

Title: Testing Limits
Author: Louise Cooper
Year: 2001
ISBN-10: 0340796545
Publisher: Hodder Children's Books
Price: £4.99
Pages: 180
Binding: Trade Paperback
Type: Novel
Title Reference: Testing Limits
Notes: Month from Amazon UK.
The title page doesn't actually have the title "Testing Limits", only "Mirror Mirror 3" (words overlaid, as on the cover). Cover /spine title used.