Leap into two action-packed adventures!
In Volcano Adventure , Hal and Roger Hunt are off to the Pacific to study volcanoes with a young scientist, Dr. Dan Adams. They share some amazing experiences but Dr. Adams is behaving strangely and Hal begins to worry that he might be putting them all in danger . . .
In South Sea Adventure , Hal and Roger are commissioned to bring back some extraordinary sea creatures, but that’s not their only mission. They’re also out to visit the remote pearl-oyster beds of a secret lagoon, but there are others after the pearls as well, and they soon find themselves stranded on a desolate atoll with little hope of survival . . .
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哈爾羅傑曆險記
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