UFO's and related subjects: an annotated bibliography
Catoe, Lynn E.
Library of Congress.Science and Technology Division.
United States.Air Force.Office of Scientific Research.
Arlington, Va. : Air Force Office of Scientific Research, USAF,
1969.
"AFOSR 68-1656."
Prepared under AFOSR project orders 67-0002 and 68-0003.
Unidentified flying objects