Mystery
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About
Hal and Roger Hunt face new dangers and challenges when they are assigned to a research project in an underwater city near the Barrier Reef.
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HealthyCounted ratings come from accounts older than 7 days and were made on or after publication. Finished readers weigh ×1.0. Readers who have not finished yet weigh ×0.5. Did-not-finish ratings are shown but not counted.
Editions
3 editions- Other · English · 1993Red Fox · 236 pages · 9780099184614
- Other · English · 1976Knight Books · 191 pages · 9780340163023
- Other · English · 1970Cape · 220 pages · 9780224619264
Adventure and adventurersChildren's storiesFictionAdventure storiesFiction, mystery & detective, general
