000 00298nam a2200133Ia 4500
008 230913s9999 xx 000 0 und d
082 _a510 sin
100 _aSingh, Gupta
245 0 _aEngineering Mathematics
260 _aMEERUT
260 _bKRISHANA
260 _c0
650 _aMathematics
999 _c139468
_d139468