I'm trying to find a book: could you help me, please?
It’s a book made by a man at the time in his 60s or 70s. The book could have been made between 1980s-2010s. He’s a scientist, and maybe a geologist. He’s trying to prove the Earth is hollow. As a matter of fact, he’s studied the theory most of his life. The book is long 600 pages, give or take 50 pages.
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