00957nam a2200229Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 082.8:52 IAU-C180 International Astronomical Union International Astronomical Union Colloquium 180th Washington, D. C. 2000 Mar. 27-30 25210 Towards models and constants for sub - microarcsecond astrometry proceedings of 180th IAU colloquium held in Washington, D. C., U.S.A., March 27-30, 2000 edited by K. J. Johnston…[et al.] Washington, D. C. U. S. Naval Observatory 2000 xix, 427p. IAU Colloquium; no.180 Astrometry Johnston, K. J., ed. 20860 Kaplan, George H., ed., 25211 Luzum, Brain, ed. 25212 McCarthy, Dennis D., ed. 25213 BK 14257 14257 0 0 0 0 BAN BAN GEN 2001-09-14 0 082.8:52/ IAU-C180 15177 2021-11-05 2001-09-14 BK