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by Franklin W. DixonHardcover details (USA). details (UK). details (Germany). details (Canada). ISBN: 978-0-448-08917-1 ISBN-10: 0-448-08917-3 Grosset & Dunlap · 1938 |
See also: | ||
1989 | Paperback | The Secret Warning (The Hardy boys) |
1966 | Hardcover | The Secret Warning |