00383nam a2200145Ia 4500003000900000008004100009040001600050080001200066100002500078245005200103250001200155260004000167300001600207650001400223IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a52bDUN  aDuncan, John Charles 0aAstronomyba text bookcJohn Charles Duncan      a4th ed.  aNew YorkbHarper and Brothersc1946  axiii, 500p.  aAstronomy