000 00270nam a2200121Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
082 _a531
082 _bGUP/C
100 _aDR.S.L
_bGUPTA
245 0 _aCLASSICAL MACHANICS
260 _aMEEUT
260 _bpragati prakashan
999 _c6195
_d6195