The American Ephemeris and Nautical Almanac

• Author(s): United States Naval Observatory. Nautical Almanac Office,
• Publisher: U.S. Government Printing Office
• Pages: 596
• Language: en

Description:... 1968 includes separately paged supplement: The introduction of the IAU system of astronomical constants into the Astronomical ephemeris and into the American ephemeris and nautical almanac.