The Old Kingdom Chronicles

From Author Wars - https://authorwars.com/books/the-old-kingdom-chronicles-1056803.html

Overview:

Title: The Old Kingdom Chronicles
Author: Garth Nix
Year: 2009
Type: Omnibuses

Editions/Publications:

Unknown. The Old Kingdom Chronicles (Unknown, Garth Nix, Allen & Unwin (Australia), ISBN-10: 9781742370965, A$35.00, vii+1365 pages, Trade Paperback, Omnibus)