00280nam a2200109Ia 4500008004100000040002500041082001200066100004100078245001800119260002500137300000800162230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a510 So4  aSobel, Max A.; and Evan M. Maletsky  0aMathematics I  bGinn & Companyc1974  a468