000 00292nam a2200121Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
082 _a515 GUP
100 _aGupta, A.S
_911315
245 0 _aCalculas of variations
260 _bNew Delhi
_c1999
300 _a40p.
_b70
650 _aMECHANICHAL
999 _c136144
_d136144