Investigating ufos
Any unexplained object that people see in the sky is known as an Unidentified Flying Object, or UFO. Today, one in seven Americans claims to have seen a UFO. Learn more in Investigating UFOs, a World's Greatest Mysteries book.
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| Format: | EBOOK |
| Language: | ENGLISH |
| Published: |
Lightbox Learning Inc
2020
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| Series: | World's greatest mysteries |
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