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by Franklin W. DixonPaperback details (United States). details (United Kingdom). details (Germany). details (Canada). ISBN: 978-1-4814-3874-2 ISBN-10: 1-4814-3874-3 Aladdin · 2015 |
| See also: | ||
| 2015 | Hardcover | Tunnel of Secrets (Hardy Boys Adventures) |
| 2015 | Digital | Tunnel of Secrets |