00469nam a2200157Ia 4500003000900000008004100009040001600050080001600066100001500082245008600097260003800183300001000221650004100231650002300272650001600295IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.43bLEY  aLey, Willy 4aThe exploration of marscWilly Ley                                                 aLondonbSidwick and Jacksonc1956  a184p.  aAstronomy and astrophysics thesaurus  aExploration - Mars  aPlanet Mars