000 00351nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aHadley G; Kemp M.C
245 _aVariational methods in economics
260 _c1971
_bNorth Holland
366 _b1971
650 _aECONOMICS
942 _cBK
999 _c826
_d826