000 00297nam a2200121Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
100 _aGupta A.S
245 0 _aCalculas of Variations with Application
260 _aDelhi
_bPHI Learning
_c2014
300 _a242p
942 _cGB
999 _c33184
_d33184