U.S. Governement Printing Office
The Astronomical almanac for the year 2018 data for astronomy, space sciences, geodesy, surveying, navigation and other applications - Washington : U.S. G.P.O. ; 2017. - x, A1-N18 p.:
9780707741772
Astronomical ephemeris
Nautical almanacs
NAUTICAL ASTRONOMY
52 (059) /H.M.S.O.
The Astronomical almanac for the year 2018 data for astronomy, space sciences, geodesy, surveying, navigation and other applications - Washington : U.S. G.P.O. ; 2017. - x, A1-N18 p.:
9780707741772
Astronomical ephemeris
Nautical almanacs
NAUTICAL ASTRONOMY
52 (059) /H.M.S.O.