00315nam a2200109Ia 4500008004100000040002500041082001200066100004600078245003800124260003500162300000800197230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a530 H55  a Hill, Faith Fitch and Peter B. Barcaski  0aSpaceship earth: physical science  bHOUGHTON MIFFLIN COMPANYc1974  a453