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by Nautical Almanac Office, U. s.
by United States Naval Observatory; Nautical Almanac Office
by U. s. Nautical Almanac Office
by Nautical Almanac Office, United States; Her Majesty's Nautical Almanac Office
by Nautical Almanac Office United States Naval Observatory
by Nautical Almanac Office, United States
by United States Nautical Almanac Office
by Schubert, E; Almanac Office, Nautical
by Nautical Almanac Office