00538nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001600084100001800100245008600118260005100204300001000255650004100265650001100306650002200317650001700339IN-BaIIA211028s9999    xx            000 0 eng d  a0-563-17859-0  cIIA Library  a523.64bCAL  aCalder, Nigel 4aThe comet is coming!cNigel Calder                                                 aLondonbBritish Broadcasting Corporationc1980  a160p.  aAstronomy and astrophysics thesaurus  aComets  aPlanetary systems  aSolar system