1988 Britannica book of the year 
Encyclopedia Britannica 
 - Chicago  L.B. Publishers  1988 
 - 910p. 
<br/><br/><label>ISBN: </label>0-85229-486-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Encyclopedia
<br/><br/><label>Universal Decimal Class. No.: </label>58  / ENB-88