00707nam a2200181Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library (059):52 NAU Her Majesty's Nautical Almanac Office The astronomical almanac for the year 2020 and its companion the astronomical almanac online data for astronomy, space sciences, geodesy, surveying, navigation, and other applications Nautical Almanac Office, United States Naval Observatory Washington Nautical Almanac Office 2019 [various pagings.] Almanac 10635 Astronomical almanac Ephemeris BK 19499 19499 0 0 0 0 BAN BAN GEN 2020-01-02 1 (059):52/ NAU 20421 2023-03-23 2022-03-10 2020-01-02 BK