[The Hardy Boys 68] • The Submarine Caper
![[The Hardy Boys 68] • The Submarine Caper](/cover/p4bQlpRVGvrV-JPq/big/[The%20Hardy%20Boys%2068]%20%e2%80%a2%20The%20Submarine%20Caper.jpg)
- Authors
- Dixon, Franklin W.
- Publisher
- Wanderer Books
- Tags
- mystery , childrens , adventure , young adult
- ISBN
- 9780671423391
- Date
- 1981-10-01T00:00:00+00:00
- Size
- 0.12 MB
- Lang
- en
On a visit to Germany, the Hardy brothers investigate the theft of plans for a newly invented submarine and the mysterious disappearance of valuable coins and paintings.