Reference coordinate systems for earth dynamics proceedings of the 56th Colloquium of the International Astronomical Union held in Warsaw, Poland, September 8-12, 1980
International Astronomical Union Colloquium Warsaw, Poland) 1980 E. M Gaposchkin; Barbara Ko±aczek; International Astronomical Union
Dordrecht, Holland Boston D. Reidel Hingham, MA Sold and distributed in the USA and Canada by Kluwer Boston c1981