000			00341nam a2200133Ia 4500
001			13426
008			170722s9999 xx 000 0 und d
100			_aGreenblatt M. H.
245			_aMathematical entertainments : _bA collection of illuminating puzzles /
260			_c1965
653			_aGroup Theory
653			_aMathematics
942			_cGEN
999			_c3129 _d3129