Exploration of Halley's comet  20th ESLAB symposium on the exploration of Halley's comet held in Heidelberg, Germany, 27-31 Oct 1986 
edited by B. Battrick and Erica Rolfe                                            
 - The Netherlands  European Space Agency  1986 
 - 477p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Halley's Comet
<br/><br/><label>Universal Decimal Class. No.: </label>523.64(082.2)  / BAT