000 00291nam a2200121Ia 4500
008 200208s9999 xx 000 0 und d
082 _aJEL
245 0 _aJournal of Economic Literature
245 0 _nv.31(3-4)
260 _aU.S.A
260 _bAmerican Economic Association
942 _cBV
999 _c139749
_d139749