000 00260nam a22001097a 4500
082 _a515.1 FEX'I
100 _aFOX, CHARLES
_957329
245 _aAN INTRODUCTION TO THE CALCULUS OF VARIATIONS
260 _aLONDON
_bOXFORD
_c1950
300 _a271P
942 _cBK
999 _c567622
_d567622