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Skywatcher UAP Detection
Books
I
In Plain Sight: An Investigation into UFOs and Impossible Science
Ross Coulthart
2021
U
UFOs and the National Security State: Chronology of a Coverup, 1941-1973
Richard M. Dolan
2000
D
Dimensions: A Casebook of Alien Contact
Jacques Vallée
1988
O
Operation Trojan Horse
John A. Keel
1970