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This is Government Attic's posting of a 1969 Library of Congress annotated bibliography, UFOs and Related Subjects, compiled by Lynn E. Catoe for the Air Force Office of Scientific Research. The Defense Technical Information Center released it under FOIA in November 2014. The bibliography lists more than 1,600 items and was requested to support the University of Colorado UFO study led by Edward U. Condon. Its preface concludes that no simple, single explanation of the UFO phenomenon applies to all cases.
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Raman, Sir C. V. The optics of mirages. Current science, Bang-.ilore, 29(8), August 1959: 309-313. The author explains the basic cori~epts of inferior and superior mirages. Wood, Robert W. Physical optics. New York, Dover Publications, 3rd edition, 1961, p;.:i. 64-98. A classical work in the field. Wood, a gifted experimentalist, produced mirages in the laboratory by heating sand-covered iron plates. His careful measurements are witness to the essential validity of present-day mirage theory. Menkello, Frederick. Quantitative aspects of mirages. ETAC Report 6112, Environmental Technical Ap1;lications Center, Military Air Command, USAF._ Washington, D. C. , March 1969. 15 p. Even under unusual meteorological conditions, mirages only take place at angles very near the horizon. This report presents graphs and nomograms for determining the angles under which mirages can be seen. Drawings and graphs are given to scale. 376
Document, cited by the archive. The PDF is mirrored here; the original link is under it. 419 pages are in the text index: search them above, or from the library's search.