TY - BOOK AU - Gaposchkin, E. M. Kołaczek, Barbara ED - Proceedings of the 56th Colloquium of the International Astronomical Union TI - Reference coordinate systems for earth dynamics : proceedings of the 56th colloquium of the international astronomical union held in Warsaw, Poland, September 8-12, 1980 T2 - Astrophysics and Space Science Library SN - 90-277-1260-3 PY - 1981/// CY - Dordrecht PB - D. Reidel KW - Coordinate SystemsEarth Dynamics ER -