Time Trap

From Author Wars - https://authorwars.com/publications/time-trap-285654.html

Overview:

Title: Time Trap
Author: Nicholas Fisk
Year: 1979
ISBN-10: 0140310649
Publisher: Puffin / Penguin Books (UK)
Price: £0.50
Pages: 96
Binding: Paperback
Type: Novel
Title Reference: Time Trap
Notes:
- Apparent 1st printing of the 1979 Puffin edition. (No number line.)
- "in association with Victor Gollancz" (from the title page)
- Back cover lists the following prices:
  United Kingdom 50p
  Australia $1.50
  Canada $1.50
- Note that later printings (at least the 4th) have a different cover.