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by Matthew KirbyPaperback details (UK). details (USA). details (Germany). details (Canada). ISBN: 978-1-4071-2040-9 ISBN-10: 1-4071-2040-9 Scholastic · 2010  | 
| See also (possibly by other authors): | ||
| 2011 | Paperback | The Clockwork Three | 
| 2010 | Hardcover | The Clockwork Three |