1993 Britannica Book of the year 
Encyclopedia Britannica 
 - Chicago  Encyclopaedia Britannica  1993 
 - 928p 
<br/><br/><label>ISBN: </label>0-85229-585-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NASA Thesaurus<br/>Year Book
<br/><br/><label>Universal Decimal Class. No.: </label>058:5  / BRI-93