The mystery of the disappearing floor.
Ratings5
Average rating3.4
15
Ratings5
Average rating3.4
This is a duplicate. Please update your lists. See https://openlibrary.org/works/OL15137825W.
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First Hardy Boys book I have read. It's a pretty good mystery. I'll probably read some more of these
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96 primary booksThe Hardy Boys is a 95-book series with 95 primary works first released in 1920 with contributions by Franklin W. Dixon, Jerrold Mundis, and Leslie H. Morrill.
