000 00390nam a2200145Ia 4500
008 170207s9999 xx 000 0 und d
082 _a511 NOR-R
100 _aNorthrop, Eugene P
245 _aRiddles in mathematics: A book of paradoxes
260 _bEnglish Universities Press Ltd., London
260 _c1959
300 _a242
650 _aMathematics - Generalities
942 _cBOOKS
999 _c4668
_d4668