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Cometary astrometry : proceedings of a workshop held June 18-19, 1984, at the European Southern Observatory headquarters in Garching, Federal Republic of Germany / editors, Donald K. Yeomans ... [et al.].
Comets -- Congresses.
Halley's comet -- Congresses.
Yeomans, Donald K.
European Southern Observatory.
International Halley Watch.
Catalog