Hardy Boys 20: Mystery of the Flying Express
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Author: Franklin W. Dixon.
- Publisher: National Geographic Books
- Pages: 192
- Publication Date: 1941-01-01
- Binding: Hardcover
- MSRP: 8.99
- ISBN13: 9780448089201
- ISBN: 9780448089201
- Other ISBN: 9781101076347
- Other ISBN Binding: print
- Language: en
- Store Location: Chapter
- "Book cover image may be different than what appears on the actual book."
