Cometary astrometry  proceedings of a workshop held in Garching, Germany, June 18-19 1984 
edited by D. K. Yeomans                       
 - Paris  International Halley Watch  1984 
 - v, 220p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comet Halley<br/>Cometary Astronomy<br/>Data Report<br/>Data Schedule<br/>Nature of Comets
<br/><br/><label>Universal Decimal Class. No.: </label>523.64:521.9  / YEO