00375cam a2200145   4500008004100000100002200041245003600063250002300099260002900122300001900151650001600170942000700186050002100193999001500214740904s1927    gw a     b    000 0 ger  1 aHausdorff, Felix,10aMengenlehre,cvon F. Hausdorff.  a2. neubearb. Aufl.  aBerlin,bGruyter,c1927.  a285 p.billus. 0aSet theory.  cBK0 aQA248b.H18 1927  c1299d1299