00498nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001500084100001800099245012700117260004800244300001400292650001200306650002200318IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-64440-2  cIIA Library  a523.4bSTE  aStern, S Alan 0aOur worldsbthe magnetism and thrill of planetary explorationcS. Alan Stern                                                aCambridgebCambridge University Pressc1999  axi, 172p.  aPlanets  aSpace exploration