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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.
“Tunguska explosion”3 pages
MIRAGES The first four references are among the most useful standard texts on physical meteorology. All contain adequately detailed treatment of the general theory of mirages. Fleagle, Robert G. and Joost A. Businger. An introduction to atmospheric physics. New York, Academic Press, 1963, pp. 272-302. ~umphreys, W.J. Physics of the air. New York, McGraw-Hill Book Co., 3rd edition, 1940, pp. 455-475. Johnson, John C. Physical meteorology. New York, The Technology Press of M.I. T. and John Wiley & Sons, 1954, pp. 1-30. Tverskoi, P.N. Physics of the atmosphere. Jerusalem, Israel Program for Scientific Translations, 1965, pp. 457-478. Durst, C. S. and G. A. Bull. A!l unusual refraction phenomenon seen from a high- flying aircraft. Meteorological Magazine, London, 85 (1010), August 1956: 237-242. Discusses the rarely seen mirage caused by refraction ol light through an elevated layer of warm air. The optical effects of such layers have often been invoked to explain UFO sightings. This article clarifies the severe restrictions on elevation angle at which such mirages are possible. 374
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.