000			00280nam a2200121Ia 4500
008			190216s9999||||xx |||||||||||||| ||und||
100			_aGupta Kumar And Sengal
245		0	_aMechanics
260			_bPragathi Prakashan _c1989
300			_a316p
650			_aPhysics
942			_cBK
999			_c33246 _d33246