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Measurement of the lifetime of charmed particles in nuclear emulsion exposed to an 80 GeV Bremsstrahlung beam in conjunction with the $\omega $'spectrometer
Federal statistics: A special report on the statistical programs and activities of the United States government fiscal year 1987:(US) Office of Management and Budget, Statistical Policy Office, Washington, DC: Office of Management and Budget, 1986, 72 pages, $13.95 (paper), $6.50 (microfiche), SuDocs: PrEx 2.10/2: 987, PB 86-229234