00390nam a2200145Ia 4500008004100000040002500041082001200066100004700078245003100125250001900156260004100175300000800216942000700224999001300231230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a510 A15  aAllendeerfer, Carl B. and Cletus O. Oakly  0aPrinciples of mathematics   aSecond Edition  bMcGraw-Hill Book Company, Inc.c1955  a540  cBK  c544d544