U.S. Governement Printing Office
The Astronomical almanac for the year 2019 - Washington U.S. G.P.O. ; (Washington :) 2018 - x, A1-N18 p.
978-0-7077-41925
Astronomical ephemeris
Nautical almanacs
Nautical Astronomy
The Astronomical almanac for the year 2019 - Washington U.S. G.P.O. ; (Washington :) 2018 - x, A1-N18 p.
978-0-7077-41925
Astronomical ephemeris
Nautical almanacs
Nautical Astronomy