00478nam a2200157Ia 4500003000900000008004100009040001600050080001600066100001600082245008900098260004800187300001000235650004100245650001700286650001700303IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.31bSMA  aSmart, W. M 4aThe origin of the earthcW. M. Smart                                                  aCambridgebCambridge University Pressc1951  a239p.  aAstronomy and Astrophysics Thesaurus  aEarth-origin  aSolar system