000 00272nam a2200121Ia 4500
008 230413s9999||||xx |||||||||||||| ||und||
082 _a49GE
100 _aGelfand, I.M; Fomin, S.V
245 0 _acalculus of variations
260 _bDover
260 _c2000
942 _cBooks
999 _c1934
_d1934