The Walls of Air

From Author Wars - https://authorwars.com/publications/the-walls-of-air-775550.html

Overview:

Title: The Walls of Air
Author: Barbara Hambly
Year: 2020
ISBN-10: 9780008378721
Publisher: Harper Voyager (UK)
Price: £5.99
Binding: ebook
Type: Novel
Title Reference: The Walls of Air
Notes: Data from Amazon UK, Kobo (GB), Blackwells and publisher's site between 2020-05-14 and 2020-05-26. Print length of 296 pages reported by Amazon, 406 pages by Kobo.