"Precise Time and Time Interval (PTTI) Applications and Planning Meeting (24th : 1992 : McLean, Virginia)" . . . "24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting proceedings of a meeting sponsored by the U.S. Naval Observatory [and others] and held at the Ritz-Carlton Hotel, McLean, Virginia, December 1-3, 1992"@en . . . "Twenty-third Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting"@en . . . . . . . . . . . . . . "Conference papers and proceedings"@en . "Twenty-fourth Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting"@en . . . . . "24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting : proceedings of a meeting sponsored by the U.S. Naval Observatory [and others] and held at the Ritz-Carlton Hotel, McLean, Virginia, December 1-3, 1992"@en . "24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting : proceedings of a meeting"@en . . . "Twenty-fourth annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting"@en . . "Precise Time and Time Interval (PTTI) Applications and Planning Meeting (24th : 1992 : Pasadena, Calif.)" . . . . .