000 00369nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aElton Edwin.J; Gruber, martin J
245 _aPortfolio theory 25 years after.
260 _c0
_bNorth Holland
366 _b0
541 _g3115 28.10.87
650 _aAccounting
942 _cBK
999 _c3858
_d3858